名词
中文翻译:Unknown
同义词:
['paired fins', 'paired appendages', 'paired limbs']
例句:
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1. The fish swimin pairs to avoid predators.
鱼成对游泳以避免捕食者。
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2.The dolphins have a pair of flippers on each side.
海豚每侧有一对鳍。
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3.The shark has two pairs of gills, which help it breathe underwater.
鲨鱼有两对鳃,帮助它在水下呼吸。