仙虾:透明的淡水鳃足类的任何一种,无甲壳并且倒置游动。
Fairy shrimp: any of various transparent freshwater crustaceans of the order anostraca that lack a carapace and characteristically swim upside-down.
鳗类,鳗:无颚的各种原始水生圆口纲脊椎动物中的一种,包括七鳃鳗和盲鳗。
Any of various primitive aquatic vertebrates of the class Cyclostomata, lacking jaws and including the lampreys and hagfishes.
鳗类,鳗:无颚的各种原始水生圆口纲脊椎动物中的一种,包括七鳃鳗和盲鳗。
Any of various primitive aquatic vertebrates of the class Cyclostomata, lacking jaws and including the lampreys and hagfishes.
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