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

Meal made from corn, used in a wide variety of foods.
玉米粉用于多种食物的用玉米做成的粉
There used to be a variety of foods at choice in that cafeteria.
那家自助餐馆以前有各种各样的食品可供选择。
There used to is a variety of foods at choice in that cafeteria.
那家自助餐馆以前有各种各样的食品可供选择。
A great variety of
各式各样的，种类繁多的
A black variety of garnet.
黑榴石一种黑色石榴石
A greenish variety of amphibole.
阳起石闪石的浅绿色变体
a large variety of conch.
海螺的一个大型变种。
a smaller variety of kudu.
捻角羚的一个较小的变种。
a variety of carnivorous bat.
食肉蝙蝠的一个变种。
a variety of green lacewing.
绿色草蛉虫的一个变种。
Meal made from corn, used in a wide variety of foods.
玉米粉用于多种食物的用玉米做成的粉
There used to be a variety of foods at choice in that cafeteria.
那家自助餐馆以前有各种各样的食品可供选择。
There used to is a variety of foods at choice in that cafeteria.
那家自助餐馆以前有各种各样的食品可供选择。
biological contamination of foods
食品生物污染
One of these baked foods.
这种烘烤食品中的一种
soak in marinade; of foods.
把食物在腌泡汁中浸泡。
The caloric content of foods.
食物热量的卡数
A great variety of
各式各样的，种类繁多的
Variety of expression.
说法不同的表达方法：
make suitable for eating; of foods.
使适合食用；一般指食物。
所以似乎没有什么分别

我觉得没分别.
只是读起来不同.
have a good day