天空突然變得烏雲密佈。

Suddenly, the clouds darkened the sky.

Source: Tatoeba

Sentence Composition

1 天空 tiānkōng sky
2 突然 tūrán sudden; abrupt; unexpected
3 變得 biànde to become
4 烏雲 wūyún black cloud
=5 密 Mì
  1. surname Mi
  2. name of an ancient state
=5 密 mì
  1. dense; close; thick
  2. intimate; close
  3. (bound form) secret; confidential
  4. (Internet slang) to send a private message to (sb); to DM
6 佈 bù
  1. variant of 布 bù
  2. to announce
  3. to spread