名词
中文翻译：鳍状肢
同义词：
['protractedfin', 'elongated fin例句：1. The fish hada protracted fin that allowedit to swim at high speeds.（这条鱼有一个延长的鳍，使它能够高速游动。）2. The sharkhas a protractedfin that helps it toglide through the water.（鲨鱼有一个延长的鳍，帮助它在水中滑行。）']
例句：
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1. The fish hada protracted fin that allowedit to swim at high speeds.
这条鱼有一个延长的鳍，使它能够高速游动。
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2. The sharkhas a protractedfin that helps it toglide through the water.
鲨鱼有一个延长的鳍，帮助它在水中滑行。
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3.The dolphin has a long andflexible protracted fin that allowsit to move quickly through the water.
海豚有一个长而灵活的延长鳍，使它能够快速在水中移动。