crawfish 小龙虾

例句：The accountants ate plates of crawfish, fried chicken and king cake.
会计师们吃了许多小龙虾，炸鸡还有国王蛋糕。

lobster 大龙虾

例句：Waiter, this lobster has only one claw.
服务员，这个龙虾只有一只爪。