| 释义 |
〔cyclostome〕Any of various primitive eellike vertebrates of the class Agnatha, such as a lamprey, lacking jaws and true teeth and having a circular, sucking mouth.圆口纲脊椎动物：一种类似鳗鱼的无颚纲原始脊椎动物，如盲鳗，没有下颚和真正的牙齿，而长着圆形吮吸的嘴〔fish〕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 |