英语翻译Hopefully you already know that dolphins are not fish.Do

英语翻译
Hopefully you already know that dolphins are not fish.Dolphins are warm blooded mammals like us.They breath air through a nostril on the top of their heads called a blowhole.Because dolphins breath air,they must surface periodically.Fish,however,breath by using gills underwater,and therefore do not need to surface.Many fish also have scales,which dolphins do not have.Instead,the skin of a dolphin feels rubbery.A layer of fat,called blubber,under their skin keeps them warm.The locomotion of fish and dolphins is also different.Fish swim by moving their tails from side to side (horizontally).However,dolphins swim by moving their tails up and down (vertically).
How many kinds of dolphins are there?
This question will probably never be answered correctly.As humans,we want to put everything we know of into a group.Some people like large groups with some variation and others like small,precise groups.Not everyone agrees about what marine dolphins deserve their own species name and what ones do not.I currently have 32 species of marine dolphins listed.I am pretty sure that this covers all the species accurately.Most people agree that there are six species of porpoises and five species of river dolphins
Dolphins can understand and interpret some words and actions,they cannot understand us word for word like in the TV show.Even though dolphins may not understand us completely,they might have their own languages.In fact,many people believe that dolphins communicate with languages.

大体意思我说一下吧,
海豚不是鱼,他和我们人类一样都是恒温动物.它们不像鱼在水中用腮来呼吸,他们呼吸时用 的.同时它游动的时候不像鱼用尾巴左右摆动,她是上下摇摆的.
到底海豚的种类有多少种呢?
这个问题不能无暇地回答.没个个体都有不同的个性认识,.当前我认识的有32种.我敢保证很多人都认同这个说法.大体上海豚科可以分为 6 和5
海豚能理解和模仿某些单词和行为.即便他们不能像我们一样一字一字地理解电视里内容.虽然它们不能完全懂的人类的世界,但是它们也有自己的表达方式.事实上,大部分人认为海豚是用语言来交流的.
只能这样啦.不知能不能帮到你.就当抛砖引玉吧.哈哈.