The ancient Romans kept eels as pets. And the Greek philosopher Aristotle made what is believed to be the first known study of sea life, including sharks and dolphins.
古罗马人养鳗鱼，而希腊哲学家亚里斯多德被认为是第一个研究海洋生物(包括鲨鱼和海豚)的人。
And the Greek philosopher Aristotle made what is believed to be the first known study of sea life, including sharks and dolphins.
古希腊哲学家亚里士多德关于海洋生物的研究被认为是目前已知的首次研究，他的研究对象包括了鲨鱼和海豚。
And the Greek philosopher Aristotle made what is believed to be the first known study of sea life, including sharks and dolphins.
古希腊哲学家亚里士多德关于海洋生物的研究被认为是目前已知的首次研究，他的研究对象包括了鲨鱼和海豚。
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