海豚一种海豚科海洋鲸类哺乳动物，如的宽吻海豚，与鲸近似但一般比鲸小且有喙状吻。
Any of various Marine cetacean mammals, such as the bottle - nosed dolphin, of the family Delphinidae, related to the whales but generally smaller and having a beaklike snout.
白鳍豚的进化环境与其他海豚或鲸类哺乳动物完全不同。
It developed in near total isolation from any other species of dolphin or whale.
白鳍豚的进化环境与其他海豚或鲸类哺乳动物完全不同。
It developed in near total isolation from any other species of dolphin or whale.
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