| 单词 | isocercal | 
| 释义 | isocercaladjective  iso·cer·cal  1   : having symmetrical upper and lower lobes and a gradually tapering vertebral column  —used of the tail fin of a fish   2   : having or relating to an isocercal tail fin    isocercy  ˈ⸗⸗ˌsərsē -rkē  plural -es | 
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