小型淡水甲壳动物，长有盾牌状甲壳。

Small freshwater crustaceans with a shield-shaped carapace.

youdao

这是唯一的本地小龙虾种，而淡水甲壳动物是生态系统的另一部分。

It's the only native crayfish species, and the freshwater crustaceans are are just another part of the ecosystem.

youdao

这是唯一的本地小龙虾种，而淡水甲壳动物是生态系统的另一部分。

It's the only native crayfish species, and the freshwater crustaceans are are just another part of the ecosystem.

youdao