英语语法分析

Copepods are microscopic relatives of shrimp and lobsters.

桡脚类动物是虾和龙虾的亲戚关系在显微镜下。

the other group feeding on copepods (small crustaceans) and shrimp.

另一群以桡脚类动物（小型甲壳类动物）和虾为食。

Some essential nutrients necessary for reproduction of copepods are insufficient in diatom cells.

高浓度硅藻对桡足类繁殖的抑制机制。