圖書館在四樓。

The library is on the 4th floor.

Source: Tatoeba

Sentence Composition

1 圖書館 túshūguǎn library

classifiers: 家, 個
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 四 sì
  1. four
  2. 4
=4 樓 Lóu surname Lou
=4 樓 lóu
  1. house with more than 1 story
  2. storied building
  3. floor

classifiers: 層, 座, 棟