单词 | 鱼纲 |
释义 | 〔fish〕Any of numerous cold-blooded aquatic vertebrates of the superclass Pisces, characteristically having fins, gills, and a streamlined body and including specifically:鱼:鱼纲冷血水生脊椎动物中的任意一种,具有鳍、鳃和流线体型,尤指包括: |
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