| 单词 | pelvic fin |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔clasper〕A posterior extension on each of the pelvic fins of male elasmobranch fishes that aids in the transmission of sperm during copulation.交合突，鳍脚：雄性板腮亚纲鱼的每支腹鳍的前端延伸，在交配中辅助精子的传递美国传统〔goby〕Any of numerous usually small spiny-finned fishes of the family Gobiidae, having the pelvic fins united to form a suction disk.鰕虎鱼：鰕虎鱼科的一种通常小的带棘鳍的鱼，具有聚合成吸盘的腹鳍美国传统〔ventral fin〕A fin, such as a pelvic fin or an anal fin, that is found on the ventral side of a fish.腹鳍；臀鳍：位于鱼的腹侧的鳍，如腹鳍或臀鳍美国传统The pelvic fins of the male catfish are longer and more pointed than those of the female.雄鲶鱼的腹鳍比雌鲶鱼的要长要尖。剑桥国际 |
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