但是如果他这样做，他也许就会加速自己国家的灭亡。

But if he does this, he may hasten the collapse of his own country.

《柯林斯英汉双解大词典》

每年的保险费可能有点贵，但是如果您的狗受了伤就很值了。

The annual premium can be a little steep, but will be well worth it if your dog is injured.

《柯林斯英汉双解大词典》

如果你尝试了一种销售技巧，但是没有成功，一份单子都没做成，你会再试一次吗？

If you try a sales technique and flub it, not making a sale, will you try it again?

《柯林斯英汉双解大词典》

No, no. But if you have a UROP, or you have a sports practice or something, we will allow that.

不行，但是如果你得到本科生研究计划，或者你要进行体育锻炼，我们是能够接受的。

麻省理工公开课 - 固态化学导论课程节选

I think if, you know, everyone sort of thinks about, I don't know, all being an entrepreneur. But if you're not,

我觉得，如果每个人都有做企业家的想法。
但是你如果不这样想，

要想成为事业家 - SpeakingMax英语口语达人

So, if you want to go at 1:00, you're welcome to do so, but please arrange it with my assistants.

如果你想去上1点的课，也可以，但是一定要和我的助教安排一下。

麻省理工公开课 - 固态化学导论课程节选