他们在酒吧喝酒。

They're at the bar drinking.

They're at the bar drinking beer.

Source: Tatoeba

Sentence Composition

1 他们 tāmen they; them
2 在 zài
  1. to exist; to be alive
  2. (of sb or sth) to be (located) at
  3. (used before a verb to indicate an action in progress)
3 酒吧 jiǔbā bar (place to buy drinks)

classifier: 家
4 喝酒 hējiǔ to drink (alcohol)