时而

He veered between calm acceptance and hysterical accusations.

他时泰然处之，时歇斯指责。

His moods kept changing—now happy, now filled with despair.

他情绪多变——时高兴, 时感到绝望。

He was a charming mixture of glum and glee.

他是一个很有魅力的人，时忧伤时欢笑。

They entreated and threatened, but all this seemed of no avail.

他们时恳求, 时威胁, 但这一切看来都没有用。

He’s been taken to task for his habitual lack of punctuality.

他因为经常不准时受到批评。

No longer should our legislators be able to publicly excoriate FDA employees while ignoring their own complicity.

国会议员们不应再当众批评FDA雇员时忽己恰恰是同谋犯。