白鳍豚英语作文

① 白鳍豚的英语介绍

The ji (scientific name: Lipotes vexillifer), also called the ji, white, is a freshwater cetaceanLipotidae animal, only proced in the middle and lower Yangtze River Chinese, with long, the body is spindle shaped, glabrous skin exposed, like gregarious, temperament gentle care, audio-visual organ serious degradation, sonar system is especially sensitive. The ji is a warm blooded animal, lungs, known as the "water of the giant panda". To twentieth Century, e to various reasons, the population decline, estimated in 2002 has been less than 50 head, it not only were classified as a national protected wild animal, is one of the world's 12 most endangered animal. In August 8, 2007, "the Royal Society journal Biological letter" published in the report, formally announced the ji functional extinction
求采纳！！

② white —flag dolphin的英文介绍

white-flag dolphin
白鳍豚

例句：

1、Some havebeen bred in captivity at the Tian'ezhou White-Flag Dolphin NationalNature Reserve in central China's Hubei Province.
有一些江豚在位于中国中部湖北省的长江天鹅洲白鳍豚国家级自然保护区内进行人工饲养。
2、Article 37 The State maintains special protection of the rare and endangeredaquatic wild animals such as white-flag dolphin to prevent them from extinction.
第三十七条国家对白鳍豚等珍贵、濒危水生野生动物实行重点保护，防止其灭绝。
3、Chinese scientists said they will continue to search for the rare white-flag dolphinalthough it is possibly extinct as a 38-day search failed to find any in the Yangtze River.
中国科学家称他们将继续搜索罕见珍贵的白鳍豚，尽管它们很可能已经灭绝，因为38天长江中的搜索没有任何发现。

③ 用英语怎么介绍白鳍豚

Called the ji Baiji, the oceanic whitetip is a freshwater cetacean Lipotidae animals, only proced in the middle lower reaches of the Yangtze River, with kiss, the body is spindle shaped, whole body naked skin glabrous, gregarious, gentle care, audio-visual organ serious degradation, sonar system is especially sensitive. It is a warm blooded animal, lungs, known as the "water of the giant panda". To the 20th century, e to various reasons make the population decreased, estimated in 2002 has been less than 50 head dolphin is not only listed as wild animal protection at the national level, and is one of the world's 12 most endangered animals. In August 8, 2007, "the Royal Society" in the journal Biological letterhead issued a report, officially announced the ji functional extinction.
白鳍豚也称为白暨豚、白鳍，是一种淡水鲸类白鱀豚科动物，仅产于中国长江中下流域，具长吻，身体呈纺锤形，全身皮肤裸露无毛，喜欢群居，性情温顺谨慎，视听器官严重退化，声纳系统特别灵敏。白鳍豚是恒温动物，用肺呼吸，被誉为“水中的大熊猫”。至20世纪由于种种原因使其种群数量减少，2002年估计已不足50头，白鳍豚不仅被列为国家一级野生保护动物，也是世界12种最濒危动物之一。2007年8月8日，《皇家协会生物信笺》期刊内发表报告，正式公布白鳍豚功能性灭绝。

④ 英语介绍频危动物白鳍豚300单词

白鳍豚（bái qí tún）,在长江里大约生活了2500万年的白暨豚,是中新世及上新世延存至今的古老孑遗生物.白暨豚是鲸类家族中小个体成员,是世界上现有5种淡水豚(拉河豚、亚河豚、恒河豚、印河豚、白暨豚)中存活头数最少的一种.由于数量奇少,白暨豚不仅被列为中国一级保护动物,也是世界12种最濒危动物之一.原属淡水豚科,20世纪70年代末,根据中国科学家周开亚教授的建议,单独设立了白暨豚科. 鲸目白暨豚科白暨豚属的唯一种.
白鳍豚的体形呈纺锤形,身长约2-2.5米左右,体重可达200千克以上.嘴部又长又细,背呈浅灰色或蓝色,腹面为纯白色,背鳍形如一个小三角,胸鳍宛如两只手掌,尾鳍扁平,中间分叉,善于游水,时速可达80千米左右.由于长期生活在浑浊的江水中,白暨豚的视听器官已经退化.它眼小如瞎子,耳孔似针眼,位于双眼后下方.但大脑特别发达,声纳系统极为灵敏,头部还有一种超声波功能,能将江面上几万米范围内的声响迅速传入脑中.一旦遇上紧急情况,便立刻潜水躲避.白暨豚耐寒,体温通常在36℃左右.
编辑本段分布范围
白鳍豚主要生活在长江中下游及与其连通的洞庭湖、鄱阳湖、钱塘江等水域中,通常成对或10余头在一起,喜在水深流急处活动.现有数量稀少,20年前的估计只有300头左右,当时就已面临灭绝的危险.
编辑本段生活习性
白鳍豚喜欢群居,尤其在春天交配季节,集群行为就更明显.每群一般2-16头.其活动范围广,但对水温条件要求较高,经常在一个固定区域停留一段时间,待水温条件发生改变后,又迁入另一地域.以鱼类为食.
白鳍豚喜欢生活在江河的深水区,很少靠近岸边和船只,但它时常游弋至浅水区,追逐鱼虾充饥.它的吻宽细长,上下颌长有130多枚圆锥形的同型齿,可它却懒得咀嚼,只管张口吞下鱼食,消化能力很强.白暨豚往往成对或三五成群一起活动,但人们很少有机会看到它,只有在它露出水面呼吸时才能瞥见一眼.
白鳍豚分布在长江中下游干流的湖北枝城至长江口约1600千米的江段内,以鱼为食,喜结群活动,小群约2～3头,大群约9～16头.白暨豚是用肺呼吸的水生哺乳动物,每次呼吸时,头顶及呼吸孔先浮出水面,接着露出背部和低三角形的背鳍,出水呼吸时间约1-2秒钟,潜水时间每次约20秒,长潜时可达200秒.成熟个体最大体长,雌性2.5米,雄性2.3米,体重100～150千克,有恒定体温,总是在36摄氏度左右.

Dolphin (bái qí tún), about living in the Yangtze River in the years 2500 and the white dolphin, is the Miocene and Pliocene extension has kept the ancient relict biological. White whales and dolphins are small and medium-sized indivial family members, is the world's available fresh water dolphin 5 (La globefish, Asia globefish, Platanistidae India globefish, and the white dolphin), the first to survive for at least a few. As the number of odd little white dolphin and not only China is listed as a protected species, the world's 12 most endangered animals. River dolphin origin, age 70 at the end of the 20th century, according to Chinese scientists, Professor Zhou Kaiya's proposal to set up a separate white dolphin and Branch. Mejiro whale and dolphin and the white section is the only species of dolphin.
The dolphin was spindle shape, is about 2-2.5 meters and weighing up to 200 kg and above. Long and thin mouth, back Light gray or blue, pure white for the ventral, dorsal fin-shaped as a triangle, two pectoral fin like the palm of your hand, flat tail fin in the middle fork, good at swimming, the maximum speed of 80 km around . Due to the long-term living in the muddy river, the white dolphin and audio-visual organs have been degraded. Small as it is blind eye, the eye of a needle like ears, eyes at the bottom of the post. However, the brain developed, thus, extremely sensitive sonar system, there is a head ultrasound function, Jiang could face tens of thousands of meters of the rapid introction of sound mind. In the event of an emergency, they immediately dive to escape. White dolphin and cold, the temperature is usually around 36 ℃.

⑤ 英语作文 保护白鳍豚100字初一

保护白鳍豚

憨厚、可爱的白鳍豚， 被人们称为“长江女神”、“水中大熊猫”、“活化石” ，也是我国目前最濒危的国家一级保护动物。它全身灰白，体态优美，呈流线型。眼睛很小，嘴似长剑，背鳍为三角形，尾鳍又大又扁。圆圆的鼻孔长在头顶，非常像海豚。在水中，它游动时和鱼类一样，十分的灵活，那急速穿行于波涛之中的身影令人惊叹不已。
可是，我们的“长江女神”现在并不快乐，她的眼泪在浑浊的江水中飞洒，她的视觉也变得像江水般浑浊，常常被噪音吵得晕头转向，撞到船舶的螺旋桨上死亡，在一片电光中丧生。他们的家园充满恶臭和肮脏。长江不再是白鳍豚的家园，人类已成为白鳍豚的天敌。
由于生态环境受到很大破坏，长江白鳍豚现存量已不到一百头，如不有效保护，白鳍豚将会在二十年后从地球上消失。难道长江白鳍豚将要在二十年之后重演恐龙灭绝留给人类的遗憾吗？面对这种情况，我要大声疾呼：“爱惜我们共有的家园，保护生态环境，保护野生动物，就是保护人类自己啊！”
为了“长江女神”不再哭泣，让我们共同保护浩浩长江不受污染，更加爱惜我们的朋友，更加爱惜我们共有的家园吧！
Dolphin protection
.
Honest, lovely dolphin, known as the "goddess of the Yangtze River", "giant panda in the water" and "living fossil", is currently China's most endangered animal protection at the national level. Its whole body is gray, graceful posture, is streamlined. Small eyes, mouth like sword, the dorsal fin is triangular, large and flat fin. Round nose is long on the top of the head, very like a dolphin. In the water, when it is swimming and fish, is very flexible, and the rapid movement of the waves in the form of amazing.
However, the "goddess of the Yangtze River" now is not happy, her tears in the muddy river FEISA, her vision has become like the river like a muddy, often noisy confused and disoriented, hit the ship propeller, killed in a lightning. Their homes are full of stench and dirty. The Yangtze River is no longer left home, has become the enemy of human dolphin.
Because of the ecological environment has been greatly damaged, the Yangtze River dolphin biomass has been less than one hundred head, if not effectively protected, dolphins will disappear from the earth in twenty years. Does the Yangtze River Dolphin will be in twenty years after a repeat of the extinction of dinosaurs for human beings and regret? Faced with this situation, I want to shout: "cherish our common homeland, protecting the ecological environment, the protection of wild animal, is to protect ourselves!"
In order to "goddess of the Yangtze River" is no longer crying, let us work together to protect the vast Yangtze River is not polluted, more cherish our friends, more cherish our common homeland!
保护白鳍豚

憨厚、可爱的白鳍豚， 被人们称为“长江女神”、“水中大熊猫”、“活化石” ，也是我国目前最濒危的国家一级保护动物。它全身灰白，体态优美，呈流线型。眼睛很小，嘴似长剑，背鳍为三角形，尾鳍又大又扁。圆圆的鼻孔长在头顶，非常像海豚。在水中，它游动时和鱼类一样，十分的灵活，那急速穿行于波涛之中的身影令人惊叹不已。
可是，我们的“长江女神”现在并不快乐，她的眼泪在浑浊的江水中飞洒，她的视觉也变得像江水般浑浊，常常被噪音吵得晕头转向，撞到船舶的螺旋桨上死亡，在一片电光中丧生。他们的家园充满恶臭和肮脏。长江不再是白鳍豚的家园，人类已成为白鳍豚的天敌。
由于生态环境受到很大破坏，长江白鳍豚现存量已不到一百头，如不有效保护，白鳍豚将会在二十年后从地球上消失。难道长江白鳍豚将要在二十年之后重演恐龙灭绝留给人类的遗憾吗？面对这种情况，我要大声疾呼：“爱惜我们共有的家园，保护生态环境，保护野生动物，就是保护人类自己啊！”
为了“长江女神”不再哭泣，让我们共同保护浩浩长江不受污染，更加爱惜我们的朋友，更加爱惜我们共有的家园吧！

⑥ 拯救白鳍豚的建议英语作文带翻译80字

生活中，总有一些事，能让自己开心，也能让别人开心。在我的经历中，有很多很多美好的事情，令自己开心不已。我很想拿自己开心的事和别人开心的事交流与分享。
回想起那次“学炒豆芽”，真的使我很开心，我的家人也很开心。记得那是两年前的事了，想起来就让我甜甜一笑。
有一天早晨，妈妈对我说：“都这么大了，你还不会做家务事。”我心想：是呀，我什么事都不会做，今天一定要学会做家务事，为妈妈分担一些家务劳动，也为自己争一口气。可我做什么呢？对了，昨天劳动课上不是学了炒豆芽的吗？那就试试吧！于是，我对妈妈说：“妈妈，今天我要炒豆芽。”妈妈高兴地同意了。
我照着劳动书上说的那样，准备好了材料：绿豆芽、菜油、葱、花椒等。由于我平时不吃辣椒，就没有准备辣椒，另外还准备了食盐。炒前，我先把绿豆芽淘洗干净，然后把水沥干，又把葱切成小节。我平时没有切过菜，所以葱切得参差不齐。我便让妈妈来帮我把葱放整齐了，然后用力均匀地切着，刀起葱落，真是娴熟呀！我照着妈妈那样又切了一遍，果然有效。一切都准备好了，我便打开煤气灶，等锅烧到很烫的时候倒进了菜油。菜油倒进锅里时，我怕烫着了，便十分小心。一会儿，油泡消失了，我就往锅里放花椒和少许食盐。当我嗅到花椒的香味后，便倒进了豆芽，“嚓嚓嚓”地快速翻炒，等豆芽熟而不软的时候把切好的葱放了进去。我把豆芽翻炒均匀后，立即起锅装盘。一闻，啊，真香！这是一盘脆嫩、味鲜、色美的佳肴。
妈妈看见了，高兴地竖起大拇指夸奖我：“珊珊长大了，能帮我干活了。”她一边说，一边夹起豆芽品尝。我自豪地说：“这一点儿小事算什么，以后我还要帮您做更多的家务事呢！”
这件小事让我小有成就感，使我发自内心的感到开心。我从中懂得了做家务事的乐趣，生活充满了阳光。

⑦ 白鳍豚的外形用英语怎样描述

Baiji was a freshwater white dolphin found only in the Yangtze River in China. Dolphins have a streamlined fusiform body, adapted for fast swimming. The tail fin is used for propulsion while the pectoral fins, together with the entire tail section, provide directional control.
The head contains the melon, a round organ used for echolocation. its elongated jaws form a distinct beak with have a curved mouth which looks like a fixed smile. Baijis breathe through a blowhole on top of their head. The trachea is anterior to the brain. The Baiji's brain is large and highly complex.

⑧ 白鳍豚英文简介

白鳍豚（bái qí tún），在长江里大约生活了2500万年的白暨豚，是中新世及上新世延存至今的古老孑遗生物。白暨豚是鲸类家族中小个体成员，是世界上现有5种淡水豚(拉河豚、亚河豚、恒河豚、印河豚、白暨豚)中存活头数最少的一种。由于数量奇少，白暨豚不仅被列为中国一级保护动物，也是世界12种最濒危动物之一。原属淡水豚科，20世纪70年代末，根据中国科学家周开亚教授的建议，单独设立了白暨豚科。 鲸目白暨豚科白暨豚属的唯一种。

白鳍豚的体形呈纺锤形，身长约2-2.5米左右，体重可达200千克以上。嘴部又长又细，背呈浅灰色或蓝色，腹面为纯白色，背鳍形如一个小三角，胸鳍宛如两只手掌，尾鳍扁平，中间分叉，善于游水，时速可达80千米左右。由于长期生活在浑浊的江水中，白暨豚的视听器官已经退化。它眼小如瞎子，耳孔似针眼，位于双眼后下方。但大脑特别发达，声纳系统极为灵敏，头部还有一种超声波功能，能将江面上几万米范围内的声响迅速传入脑中。一旦遇上紧急情况，便立刻潜水躲避。白暨豚耐寒，体温通常在36℃左右。
编辑本段分布范围
白鳍豚主要生活在长江中下游及与其连通的洞庭湖、鄱阳湖、钱塘江等水域中，通常成对或10余头在一起，喜在水深流急处活动。现有数量稀少，20年前的估计只有300头左右，当时就已面临灭绝的危险。
编辑本段生活习性
白鳍豚喜欢群居，尤其在春天交配季节，集群行为就更明显。每群一般2-16头。其活动范围广，但对水温条件要求较高，经常在一个固定区域停留一段时间，待水温条件发生改变后，又迁入另一地域。以鱼类为食。
白鳍豚喜欢生活在江河的深水区，很少靠近岸边和船只，但它时常游弋至浅水区，追逐鱼虾充饥。它的吻宽细长，上下颌长有130多枚圆锥形的同型齿，可它却懒得咀嚼，只管张口吞下鱼食，消化能力很强。白暨豚往往成对或三五成群一起活动，但人们很少有机会看到它，只有在它露出水面呼吸时才能瞥见一眼。
白鳍豚分布在长江中下游干流的湖北枝城至长江口约1600千米的江段内，以鱼为食，喜结群活动，小群约2～3头，大群约9～16头。白暨豚是用肺呼吸的水生哺乳动物，每次呼吸时，头顶及呼吸孔先浮出水面，接着露出背部和低三角形的背鳍，出水呼吸时间约1-2秒钟，潜水时间每次约20秒，长潜时可达200秒。成熟个体最大体长，雌性2.5米，雄性2.3米，体重100～150千克，有恒定体温，总是在36摄氏度左右。
编辑本段繁殖习性
白鳍豚两年繁殖一次，每胎1仔，出生时体长80厘米左右。新生幼体体色略深.成年白暨豚一般背面呈浅青灰色，腹面呈洁白色，在阳光的照耀下尤其光亮。水平伸展的鳍肢和尾鳍上下两面分别与背面和腹面同色，这样的颜色分布恰好与环境颜色相符。当由水面向下看时，背部的青灰色和江水混为一体很难分辨；当由水底向上看时，白色的腹部和水面反射的强光颜色相近也很难被发现。这使得白鳍豚在逃避敌害、接近猎物时，有了天然的隐蔽屏障。白暨豚寿命可达30多年，雌兽一般在6岁达到性成熟，雄兽为4岁。成年白暨豚每年发情两次，分别在3月至5月，8月至10月。孕期为10至11个月，一胎一仔，偶有两仔。野生状态下，成年白鳍豚雌雄比例为1：1，但雌兽怀孕率一般仅为30％，自然繁殖率很低。
每年的冬末春初是白鳍豚的交配期，母豚妊娠期长达1年左右，因此产仔大多在来年的春季。出生后的小白鳍豚靠母亲的乳汁喂养，直到五六岁才算成熟；一般寿命30年。
编辑本段身体结构
白鳍豚是食肉动物，口中约有130个尖锐牙齿，为同型齿。常在晨昏时游向岸边浅水处进行捕食，一般以整条吞食体长小于6.5厘米的淡水鱼类为主，也吃少量的水生植物和昆虫。呼吸时，头部先出水，然后全部露出水面，在水面游动2米后，再入水中。白鳍豚的视力几乎为零，依靠回声定位了解环境变化的情况，在生物学、仿生学和生理学等方面具有广泛的科研价值。但白鳍豚生性胆小，很容易受到惊吓，一般都远离船只，很难接近，加之其种群数量很少，活动区域广阔，所以在野生状态下对白鳍豚的研究十分有限。
白鳍豚皮肤光滑细腻，富有一种特殊的弹性，原理与竞赛式游泳衣着中使用具有弹性的尼龙织料相同，能够减少在水中快速游动时身躯周围产生的湍流。它的尾鳍扁平地分为两叉，两边的胸鳍呈扁平的手掌状，背鳍呈三角形。这四鳍给白鳍豚提供了优良的水中游动时方向与平衡的控制力，再加上光滑高弹性的皮肤与流线型的身躯，白鳍豚在逃避危险的情况下可达每小时60千米的游速。平常它保持着每小时10至15千米的游速。
白鳍豚长期生存于长江的浊水中，所以它的视觉和听觉均退化严重，在水中主要以发射声纳接收信号来识别物体。白暨豚的上呼吸道有着三对独特的气囊与一个形似鹅头的喉咙，但是因为生存于水中靠水发音，所以并没有陆地动物在空气中发音所需要的声带。用特制的水听器，可以听到白暨豚发出的“的答”“嘎嘎”等数十种不同的声音。白暨豚发出的声音常为两声一对，发出声音后会安静的等待着回声，从而辨出自己与产生回声的阻碍的距离和大小，并且考虑是否游向目标。它又会在收到回声后的不久发出新的一对声音，稍候又安静一阵等待回声。第二次回声收到后，它便可以分析出目标游动的方向与速度，白暨豚就是这样如人造声纳般的做回声定位。用这独特的声纳系统，它时常还可以在江底的淤泥中捕捉食物，也可以发出人耳听不见的高频率音波，与十多千米外的同伴联系。
白暨豚的大脑表面积要比海豚的大，大脑的重量约占总体量的0.5%，其中平均一只重95千克的雄豚，大脑重470克。这等重量已接近大猩猩与黑猩猩的大脑重量，甚至某些学者认为白暨豚比长臂猿和黑猩猩更聪明。

Dolphin (bái qí tún), about living in the Yangtze River in the years 2500 and the white dolphin, is the Miocene and Pliocene extension has kept the ancient relict biological. White whales and dolphins are small and medium-sized indivial family members, is the world's available fresh water dolphin 5 (La globefish, Asia globefish, Platanistidae India globefish, and the white dolphin), the first to survive for at least a few. As the number of odd little white dolphin and not only China is listed as a protected species, the world's 12 most endangered animals. River dolphin origin, age 70 at the end of the 20th century, according to Chinese scientists, Professor Zhou Kaiya's proposal to set up a separate white dolphin and Branch. Mejiro whale and dolphin and the white section is the only species of dolphin.

The dolphin was spindle shape, is about 2-2.5 meters and weighing up to 200 kg and above. Long and thin mouth, back Light gray or blue, pure white for the ventral, dorsal fin-shaped as a triangle, two pectoral fin like the palm of your hand, flat tail fin in the middle fork, good at swimming, the maximum speed of 80 km around . Due to the long-term living in the muddy river, the white dolphin and audio-visual organs have been degraded. Small as it is blind eye, the eye of a needle like ears, eyes at the bottom of the post. However, the brain developed, thus, extremely sensitive sonar system, there is a head ultrasound function, Jiang could face tens of thousands of meters of the rapid introction of sound mind. In the event of an emergency, they immediately dive to escape. White dolphin and cold, the temperature is usually around 36 ℃.
Edit this paragraph distribution
The main dolphin living in the middle and lower reaches of the Yangtze River and Dongting Lake and its connected, Poyang Lake, Qiantang River waters, etc., usually in pairs or more than 10 heads together and happy with the current depth of radical activities of the Department. Scarce number of available 20 years ago, estimates that only about 300, at the time was facing extinction.
Edit this paragraph living habits
Dolphin like gregarious, especially in the spring mating season, is even more obvious acts of the cluster. Each group of 2-16 in the first general. Its wide range of activities, but the higher water temperature conditions, often in the region remain a fixed period of time, the water temperature conditions to be changed, and moved to another area. To fish for food.
Like the river dolphin living in the Sham Shui Po District, near the shore and small boats, but it is always around to shallow waters, chasing fish to eat. Its wide kiss slender, long upper and lower 130 more than the same type of conical teeth, it may be too lazy to chew, just swallow the mouth fresh fish, a strong ability to digest. White dolphin and often in pairs or small groups together, but rarely have the chance to see it, it only exposed the surface to breathe in order to catch a glimpse of a time.
Dolphin in the middle and lower reaches of the Yangtze River in Hubei Zhicheng to the main stream of the Yangtze River estuary, about 1600 kilometers of the river, to fish for food, hi clustering, a small group of about 2 to 3, the crowd of about 9 to 16. White dolphin is a lung and respiratory aquatic mammals, each breath, his head and breathing surface first hole, then his lower back and dorsal fin of the triangle, the water to breathe for about 1-2 seconds, each time diving around 20 seconds, the long latency of up to 200 seconds. The most mature indivial body length, 2.5 m female, male 2.3 meters and weighing 100 to 150 kilograms, there is a constant body temperature, always around 36 degrees Celsius.
Edit this paragraph breeding habits
Dolphin breeding first two years, Aberdeen 1 per child, born about 80 cm length. Newborn larvae deep color slightly. Dolphin and the general alt white on the back of Green Light gray, white ventral was clean, the sun's shining especially bright. The level of the extended flipper and tail up and down with both sides of the same color on the back and ventral, so that the distribution of color exactly match the color and the environment. When looking down from the surface, the back of the green and gray of the river is mixing it is difficult to distinguish; from the bottom to the point of view when, a white belly and the light reflected from the surface color is also similar to those found to be very difficult. This allows the dolphin to avoid Di Hai, close to the game, with the hidden natural barriers. White dolphin and up to 30 years of life, in general Cishou 6-year-old to reach sexual maturity, Xiongshou 4-year-old. Alt white dolphin and estrus twice a year, in March to May and August to October. Pregnancy for 10-11 months, a one-child class, sometimes two earners. Wild state, an alt male and female ratio of 1:1 dolphin, but Cishou pregnancy rate was only 30% of the normal, natural reproction rate is very low.
Dongmochunchu annual dolphin is the mating season, the mother dolphin pregnancy for up to 1 year or so, so most of the litter in the spring of next year. After the birth of small dolphin feeding by the mother's milk until five or six-year-old is mature; general life expectancy of 30 years.
Editor of the physical structure of the paragraph
Dolphin is predators, population about 130 sharp teeth, tooth for the same type. Often in the twilight tour shore shallows when Predation for the general to swallow the entire length of less than 6.5 cm of fresh water fish-based, but also eat small amounts of aquatic plants and insects. Breathe, the water head first, and then exposed all of the water, swimming in the water 2 meters, the water re-entry. Dolphin's vision is almost zero, to rely on echolocation to understand environmental changes in biology, physiology and bionics, and so on a wide range of scientific research value. But the dolphin timid nature, are susceptible to shock, usually away from the vessel, it is difficult to close, combined with its small population, vast regional activities, so in a state of wild dolphin research is very limited.
Dolphin skin smooth and delicate, full of a special kind of flexibility with the principle of competition-style bathing suit with the use of flexible nylon weave the same material, to rece the fast swimming in the water when the turbulence generated around the body. Its flat tail fin to be divided into two forks, on both sides of the pectoral fin was like the palm of your hand flat, triangular dorsal fin. This four-fin dolphin to provide excellent swimming in the water when the direction of balance and control, combined with high flexibility of the skin smooth and streamlined body, the dolphin to avoid dangerous situations, up to 60 km per hour speed of travel . It usually maintains a 10-15 km per hour, the travel speed.
Long-term survival of the Yangtze River dolphin in the Cho-shui, it's visual and hearing are severely degraded, the water in the main reception to launch sonar signals to identify objects. White dolphin and the upper respiratory tract has three unique shape of a balloon with a goose head of the throat, but to survive in the water by water sounds, and there is no land animal in the air pronunciation of the vocal cords needed. With a special hydrophone, you can hear the white dolphin and issued "A" "quack" and dozens of different voices. White dolphin and the voice of regular twice for a pair of issuing a quiet voice will be waiting for the echo, which detected the echo of their own and have hindered the distance and size, and to consider whether travel to the goal. It will echo the receipt issued shortly after a pair of new voices, and wait quietly for a while waiting for the echo. The second received echo, it will be able to analyze the goal of swimming in the direction and speed, and white dolphin is one such man-made, such as sonar-like echolocation to do. This unique use of the sonar system, which can from time to time in the mud at the end of Jiang's capture in food, can not issue a human face value of the high-frequency sound waves, with more than 10 km outside the peer contact.
White dolphin and the surface area of the brain than the dolphin, the weight of the brain accounts for about 0.5 percent of overall volume, of which an average weight 95 kg male dolphin, brain weight 470 grams. This is close to the weight of gorilla and chimpanzee brain weight, and even some scholars believe that white dolphins and chimpanzees and gibbons than smarter.

⑨ 介绍濒危的白嗜豚英语作文

长江中的白暨豚总头数已下降到200头以下,其中50%分布在湖北省石首县至武汉市上游江段,主要栖息在弯曲河段或弯曲分汊河段的大回水区中.
The Yangtze River dolphin always number has dropped to less than 200, of which 50% are located in Hubei Province Shishou county to upstream of Wuhan section of the Yangtze River, the main habitat in the river bend or branching reach with bend the backwater region.
由于人类活动增加或活动不当,使白暨豚意外死亡事故增多.据统计,1973～1985年间,共意外死亡59头,其中被鱼用滚钩或其它渔具致死29头,占48.8%；被江中爆破作业致死11头,占18.6%；被轮船螺旋桨击毙12头,占20％；搁浅死亡6头,占10％；误进水闸1头,占1.6％.另据统计,长江下游水域中意外死亡的白暨豚,有三分之一是被轮船螺旋桨击毙的
Due to increased human activities or improper activity, make the ji accidental deaths increased. According to statistics, between 1973 and 1985, the accidental death of 59 heads, which were rolling in fish hook or other fishing gear to lethal 29 head, 48.8%; be river blasting operation to death and 11, 18.6%; by ship screw propeller killed 12 head, accounted for 20%; stranding death 6 head, 10%; mistakenly intake head 1, accounted for 1.6%. Other according to statistics, the accidental death in the waters of the middle and lower reaches of the Yangtze River dolphin, a third is killed by the ship propeller