如果你必须在一天中过得最慢的时候去的话，最保险的是买沙拉。

If you have to order fast food during a slow part of the day, a salad is your best bet.

youdao

仔细听著，如果你觉得自己有危险了，那就必须去她的房间找到蛇皮然后烧掉。

Listen carefully. If you think you are in danger, you must search her bedroom for her snakeskin, and when you find it, burn it.

youdao

如果配偶猜对了，那么你必须不断撒谎去掩饰。

If he or she is right, then you must continually lie to cover your tracks.

youdao

If you want to lose electron, you have to find someplace for that electron to go.

如果你想要失去一个电子，你就必须为它找到一个可去的地方。

麻省理工公开课 - 固态化学导论课程节选

But in order to do so, you have to use terms like "punishment" and "reward" and "reinforcement" in such a vague way that in the end you're not saying anything scientific.

但如果你要这样去做，你就必须将惩罚，奖励“,强化之类的术语概念模糊化,最终你所作出的解释便毫无科学性。

耶鲁公开课 - 心理学导论课程节选

And if you want to join the political game, you must be prepared to get your hands dirty, ? and what Machiavelli means by that, ? how he comes to this problem.

如果你想参与到政治游戏中去，你必须做好弄脏你的手的准备，马基雅维利这么说是什么意思，他是如何谈到这个问题的。

耶鲁公开课 - 政治哲学导论课程节选