是可数名词，desserts中文意思是n. （餐后）甜食，甜点（dessert 的复数）

例如

Desserts can be substituted by a portion of fresh fruit.甜点可以替换成一份新鲜水果。

Desserts are served with cream or ice cream.

甜点上加奶油或冰激凌。

You never order desserts at restaurants.