dolphins

Many dolphins die each year from entanglement in fishing nets .

每年都有许多海豚被捕鱼网缠绕致死。

A large proportion of the dolphins in that area will eventually die

那片区域里的很大一部分海豚终将死去。

The story describes the extraordinary encounter between a man and a dolphin .

这个故事描述了一个男人与一只海豚之间的奇遇。

The dolphin has evolved a highly developed jaw .

海豚已经进化形成高度发达的下颌。

The dolphin is an intelligent animal .

海豚是聪明的动物。

A dolphin leapt out of the water .

海豚跃出水面。

Whales and dolphins are still being slaughtered for commercial gain .

仍然有人为了商业利益大肆捕杀鲸鱼和海豚。

Dolphins sometimes play in the wake of the boats .

有时海豚在船的尾流中嬉戏。

Dolphins have sometimes been known to save drowning swimmers .

据悉海豚有时会救溺水的游泳者。

The whale , like the dolphin , has become a symbol of the marvels of creation

鲸和海豚一样，已经成为造物杰作的象征。

Marine biologists are calling for Cardigan Bay to be created a marine nature reserve to protect the dolphins .

海洋生物学家号召将卡迪根湾建成一个海洋自然保护区，以保护那里的海豚。

He was so happy communing with the dolphin in Dingle Bay

他在丁格尔湾与海豚交流的时候特别开心。

They cynically tried to trade off a reduction in the slaughter of dolphins against a resumption of commercial whaling

他们见利忘义地试图以减少屠杀海豚数量作为交换条件，重启商业捕鲸。

Dolphins are graceful and efficiently swimmers .

海豚游泳动作敏捷，姿势优美。

A previous study noted that dolphins always consciously control their breathing .

之前的一项研究指出，海豚会有意识地控制自己的呼吸。

For example , dolphins , as well as other marine animals , shut down one hemisphere of the brain when they go to sleep .

比如海豚，还有其他一些海洋动物，它们睡眠时会关闭大脑的一个半球。

But , as the human study suggest , another reason for dolphins keeping their eyes open during sleep is that they can look out for predators while asleep .

但是，正如这项针对人类的研究所显示的，海豚睁眼睡觉的另一个原因在于它们睡觉时要提防捕食者。

During deep sleep , the participants ' brains behaved in a similar manner seen in birds and dolphins .

在深度睡眠阶段，参与者的大脑和鸟类与海豚处于类似的情况。

She also knew from previous work conducted on birds and dolphins that these animals put half of their brains to sleep at a time so that they can rest while remaining alert enough to avoid predators .

她还从之前对鸟类和海豚的研究工作中得知，这些动物每次睡觉时都让它们的半边大脑处于睡眠中，这样它们能够一边保持对捕食者的警觉，一边休息。

Like humans , every dolphin has its own " name " .

和人类一样,每只海豚都有自己的"名字"。

Dolphins use their brains quite differently from the way humans do .

海豚使用大脑的方式与人类完全不同。

Dolphins are also social animals .

海豚也是群居动物。

Understanding dolphin conversation is not easy for humans .

人类不能轻易理解海豚的对话，

But scientists say dolphins and humans are very similar in some ways . How ?

但是科学家说海豚和人类在某些方面非常相似。是怎样相似的呢？

Why do dolphins help the men ?

为什么海豚要帮助人类？

Dolphins and humans are similar in another way : both species make plans for getting things they want .

海豚和人类在另一个方面是相似的：这两个物种都为所想得到的东西制定计划。

No one " speaks dolphin " yet , but some scientists are trying to learn .

目前还没有人会说"海豚语"，但一些科学家正在努力学习。

In the seas of southern Brazil , for example , dolphins use an intelligent plan to get food .

例如，在巴西南部海域，海豚使用了一种很聪明的计划来获取食物。

People travel to watch monkey shows , hug baby tigers and swim with dolphins .

人们去看猴子表演,拥抱小老虎,和海豚一起游泳。

Dolphins are smarter animals in the sea .

海豚是海洋中比较聪明的动物。