“水蚤”不是昆虫而属于桡足类，是一种象龙虾和蟹一样的甲壳类动物，但极其微小。

"Water fleas" are not insects but copepods, a crustacean like lobsters and crabs but extremely small.

youdao

“水蚤”不是昆虫而属于桡足类，是一种象龙虾和蟹一样的甲壳类动物，但极其微小。

"Water fleas" are not insects but copepods, a crustacean like lobsters and crabs but extremely small.

youdao