wine 酒(不可数) → a wine 一种酒(可数)
beer 啤酒(不可数) → two beers 两杯啤酒(可数)
glass玻璃(不可数) → some glasses 一些玻璃杯(可数)
请看具体用例:
The potato is a vegetable, not a fruit. 土豆是一种蔬菜,不是水果。
Marble is a precious stone. 大理石是一种珍贵的石料。
My doctor told me to avoid fatty foods such as bacon or hamburgers. 我的医生叫我避免吃油腻的食物,如咸肉或汉堡包。