vegetable表示蔬菜的种类时,可数;表示蔬菜这一整体概念时,不可数。肉是不可数名词。
The bottom of the garden was given over to vegetable plots.
花园的尽头留作了菜地。
They feed mostly on decaying vegetable matter.
它们大多以腐烂的蔬菜为食。
The meat needs to stew for two hours.
这肉得炖两小时。