請保持冷靜。

Please remain calm.

Source: Tatoeba

Sentence Composition

=1 請 qǐng
  1. to ask
  2. to invite
  3. please (do sth)
  4. to treat (to a meal etc)
  5. to request
=1 請 qīng only used in 請室／请室 (qīngshì)
2 保持 bǎochí
  1. to keep
  2. to maintain
  3. to hold
  4. to preserve
3 冷靜 lěngjìng
  1. calm; cool-headed; dispassionate
  2. (of a place) deserted; quiet