a variety of foods和variety of foods的区别?

问题描述:

a variety of foods和variety of foods的区别?
Longman里是:
还是有区别的,前者a lot of things of the same type that are different from each other in some way。后者是a type of thing,such as a plant or animal,that is different from others in the same group

我觉得没分别.
只是读起来不同.
have a good day