keep one's countenance

maintain one's composure, especially by refraining from laughter

（尤指忍住不笑）不動聲色；保持鎮定

keep someone in countenance

help someone to remain calm and confident

使（某人）冷靜自信

to keep herself in countenance she opened her notebook.

為保持鎮定，她打開了筆記本。

out of countenance

disconcerted or unpleasantly surprised

不安的；驚慌的

&B{I put} him clean &B{out of countenance} just by looking at him.

我只是看著他，就讓他非常不安。