名词中文翻译
中文翻译：腹鳍
同义词：
['ventral fins', 'ventral appendages']
例句：
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1. The fish swims with its ventral fins extended.
这条鱼用它的腹鳍游泳。
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2. The scientist observed the behavior of the fish using a microscope.
科学家用显微镜观察了这条鱼的行为。
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3. The fish's ventral fins are used for propulsion.
鱼的腹鳍用于推进。