英语词汇“dorsal fin”是什么意思，“dorsal fin”的读音、用法及例句翻译-烛光网

词汇	dorsal fin
释义	dorsal finn.（名词） The main fin located on the back of fishes and certain marine mammals.背鳍：鱼或一些海洋哺乳动物背部主要的鳍
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