名词
中文翻译：腹鳍
同义词：
['subdorsal fin', 'subdorsal keel例句：1. The fish had a long', 'thin tail with subdorsal keels that could be used for swimming.（这条鱼有一条长长的细尾巴，带有腹鳍骨，可以用来游泳。）2. The subdorsal keels of the whale were visible through the water.（鲸鱼的腹鳍骨在水面下清晰可见。）3. The scientist studied the structure of the subdorsal keels in order to understand how they function.（科学家研究了腹鳍骨的结构，以了解它们是如何工作的。）']
例句：
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1. The fish had a long, thin tail with subdorsal keels that could be used for swimming.
这条鱼有一条长长的细尾巴，带有腹鳍骨，可以用来游泳。
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2. The subdorsal keels of the whale were visible through the water.
鲸鱼的腹鳍骨在水面下清晰可见。
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3. The scientist studied the structure of the subdorsal keels in order to understand how they function.
科学家研究了腹鳍骨的结构，以了解它们是如何工作的。