He may have to become more conformist if he is to prosper again.

如果想再次成功，他可能得更遵守成规。

《柯林斯英汉双解大词典》

If he is right many people must be undersleeping, including myself.

如果他是对的，那么很多人肯定都睡得不够好，包括我自己。

youdao

She does not know if he is alive or dead.

她不知道他是活还是死。

《柯林斯英汉双解大词典》

Usually, a person is clowning around if he is being funny when he should be serious.

VOA: special.2009.01.11

Machiavelli said in that famous chapter 25, that the prince, if he is lucky, will master fortuna about half the time, only about 50% of the time.

马基雅维利在有名的第25章里说，君主，如果他幸运的话，可以在一半的时间里掌握命运，仅仅是50%的时间。

耶鲁公开课 - 政治哲学导论课程节选

I don't know if he is here.

我不知道他来没来

耶鲁公开课 - 博弈论课程节选

But if he is summoned, Sufi said Mahathir will comply with the police instructions.

CNN: What's behind Malaysia's '1MDB' scandal?

And if he is gone, when he is gone, there's bound to be some reconsideration.

NPR: Cuba (and Cuban Exiles) Ponder the Future

If he is found Maxim faces up to a year in a military jail.

BBC: Brutality sparks flood of Russian desertions