单词 桡足 例句 DEFINITIVE EXAMPLES 权威例句〔copepod〕Any of numerous minute marine and freshwater crustaceans of the subclass Copepoda, having an elongated body and a forked tail.桡足动物:任一种桡足亚纲的大量海洋或淡水甲壳纲小动物,身体细长,尾部分叉美...