蔬菜是可数名词；

vegetable

n.蔬菜;植物人;生活单调乏味的人；

复数： vegetables；

例句：

Why, this is nothing but common vegetable soup

啊，这只不过是普通的蔬菜汤而已。

In that part of the world you can feed cattle on almost any green vegetable or fruit

在那个地方，几乎任何绿色蔬菜或水果都可以给牛吃。

Since losing my job I've been a vegetable.

失业以来我感到百无聊赖。

Peas, beans and lentils are a good source of vegetable protein.

豌豆、豆荚和扁豆是植物蛋白质的大好来源。