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。

Any of numerous minute Marine and freshwater crustaceans of the subclass Copepoda, having an elongated body and a forked tail.

youdao

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。

Any of numerous minute Marine and freshwater crustaceans of the subclass Copepoda, having an elongated body and a forked tail.

youdao