喝 / 买 + 牛奶
牛奶 (niúnǎi) is a noun meaning "milk," specifically cow's milk. It is the standard word for milk used in everyday Chinese. You will encounter it when talking about food, drinks, breakfast, or grocery shopping.
我每天早上都喝一杯牛奶。
Wǒ měitiān zǎoshang dōu hē yì bēi niúnǎi.
I drink a glass of milk every morning.
冰箱里的牛奶快喝完了。
Bīngxiāng lǐ de niúnǎi kuài hē wán le.
The milk in the fridge is almost finished.
这个牌子的牛奶味道不错。
Zhège páizi de niúnǎi wèidào búcuò.
This brand of milk tastes pretty good.