sharks

Sharks have been around for a very long time .

鲨鱼已经存在很长时间了。

There are between 200 and 250 kinds of sharks in different size .

有200到250种不同大小的鲨鱼。

The shark described a circle around the shoal of fish .

这条鲨鱼围绕着鱼群游动。

The shark was writhing around wildly , trying to get free .

那条鲨鱼疯狂地扭动身体，试图挣脱。

Beware the sharks when you are making up your mind how to invest .

当你决定如何投资时要提防诈骗者。

The shark dived down and swam under the boat .

鲨鱼急速潜入水中，在船下游动。

Panic swept through the swimmers as they saw the shark approaching .

游泳的人看见鲨鱼靠近时一片惊慌。

The accursed shark alone can in any generic respect be said to bear comparative analogy to the dog .

就一般情况说来，只有那种可恶的鲨鱼，才可以说是具有跟狗相似的癖性。

Palau also established the world 's first shark sanctuary in 2009 .

帕劳在2009年时也建立了世界上第一个鲨鱼保护区。

Shark attack about 100 people a year in America .

在美国,每年大约有100人受到鲨鱼攻击。

Here you will find different kinds of fishes and even some kinds of sharks .

在这里你会发现不同种类的鱼甚至鲨鱼。

A shark is a fish , but it has many differences from a fish .

鲨鱼是鱼类，但它又和鱼有许多不同。

It is said that one of the most dangerous sharks is the Great White Shark .

据说大白鲨是最危险的一种鲨鱼。

Australia , New Zealand and South Africa also have shark 0attacks .

澳大利亚、新西兰和南非也有鲨鱼袭击。

Sharks feed on fish , other sea animals , or smaller sharks .

鲨鱼以鱼、其他海洋动物或较小的鲨鱼为食。

When a shark appears , a bell rings to tell people to get out of the water .

鲨鱼出现时会有铃响起，提醒人们离开水域。

For example , if a shark stops swimming , it will sink .

例如，如果一条鲨鱼停止游动，它就会下沉。

Perhaps the shark just thinks that the people is a kind of sea animal , or something good to eat .

也许鲨鱼只认为人是一种海洋动物,或者是什么好吃的东西。

In some places there are watchtowers on the beach to warn people about sharks in the water .

有些地方会在沙滩上会设置瞭望台来警告人们水中有鲨鱼。

One whale shark was 50 years old at time of death .

其中一头鲸鲨在死亡时有50岁。

Those sharks formed part of the great whites ' diet .

而这些鲨鱼正是大白鲨的食物之一。

But other shark detectives see a more complicated crime scene .

但其他的鲨鱼侦探认为犯罪现场的真相更复杂。

The shark opens his big mouth . Sam runs away quickly .

鲨鱼张开大嘴，塞姆又迅速地逃走了。

Sharks can get cancer too .

鲨鱼也会得癌症。

A shark was finning around the surface of the ocean .

一条鲨鱼把鳍露出海面游动

The shark 's dorsal fin was cut off by the fisherman .

鲨鱼的背鳍被渔夫割了下来。

Local fishermen have been catching7 smaller sharks to export to fish and chip shops in Australia .

当地渔民一直在捕捞较小的鲨鱼，出口到澳大利亚的炸鱼和薯条店。

But despite their docile2 nature , scientists still lack basic information , such as how long the whale sharks actually live .

但尽管它们性情温顺，科学家们仍缺乏有关它们的基本信息，比如鲸鲨的真实年龄。

He said he once harpooned a 2 , 000-pound shark off the coast of New York .

他称，他曾经在纽约海面上，用鱼叉捕获过一条重达2.000磅的鲨鱼

Since 1970 , shark and ray catches have tripled , pushing many species to the brink1 of extinction2 .

自1970年以来，鲨鱼和鳐鱼的捕捉量增加了两倍，这将许多物种推向了灭绝的边缘。