The whale is not only the world's biggest animal, it is also one of the cleverest.
2
鲸是全世界最大的哺乳动物。
The whale is the largest mammal in all creation.
3
贝吉海豚。也被称为长江豚，并发现在中国的河流，贝吉海豚是世界上最濒危的鲸类动物，它可能已经灭绝。
Baiji dolphin Also known as the Yangtze dolphin, and found in the river in China, the Baiji is the most endangered cetacean in the world. It may already be extinct.
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