echo
[eko]
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m.
回音，反响，反射波；产生回声的地方；传闻；响应；传播；应声虫
Echo
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abstract:
Echo was an elephant matriarch who was studied for over 30 years by ethologist Cynthia Moss, beginning in 1973, and was the subject of several books and films. She was the first subject of the Amboseli Elephant Research Project, the longest-running study of a land mammal.
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