演出期间请勿交谈。

Please ___refrain from talking during the performance.

成功的领导者往往避免不必要地行使权威。

Successful leaders often ___refrain from exerting authority unnecessarily.

她不得不忍住不笑那个不合时宜的笑话。

She had to ___refrain from laughing at the inappropriate joke.