Translation of "Crab" in Chinese

The first person who ate crab must also have tried to eat a spider.

第一个吃螃蟹的人一定也吃过蜘蛛。

Look, look! On the branch of the orange tree, there is a blue hermit crab!

快看快看！橙子树的树枝上有一只蓝色的寄居蟹！