potatoes are a vegetable.the potatoes are a vegetable .a potato is a vegetable .

问题描述:

potatoes are a vegetable.the potatoes are a vegetable .a potato is a vegetable .

potatoes are a vegetable:土豆是一种蔬菜
the potatoes are a vegetable :马铃薯是蔬菜
a potato is a vegetable 土豆是一种蔬菜