如果不这样做，你们的关系就会冷淡下来。

If you do not, your relationship may cool down.

youdao

如果不这样的话，全球的GPS系统将崩溃。

If you didn't, the world's GPS system would break down.

youdao

如果不这样做的话就与弹性的货币机制相矛盾。

Not doing so would be inconsistent with the flexible currency regime.

youdao

When you don't have to worry about criteria like that ordinary, mechanical energy rules supreme, and that's dictating where equilibrium lies.

如果你不担心像这样的要求,通常的机械能就占据主要地位，并且决定平衡位于何处。

麻省理工公开课 - 热力学与动力学课程节选

But, you know, any professor who stands before you should say the same thing about his or her subject. If they don't believe that, they shouldn't be teaching.

但是，你知道，所有站在你们面前的老师,可能都会这样介绍他的课程,如果他们不那样相信着，那他们就不应该教那门课了。

麻省理工公开课 - 固态化学导论课程节选

- But there's one potential gotcha here -- and this is where you have to be kind -- of piecing together the little clues along the way -- what have I done that's interesting here that had I not, I would have had a mathematical error?

但是这里有一个可能性-,这就是你需要把,一些线索拼凑在一起-,我这里所做的是很有趣的，如果我不这样做，我可能已经犯了个数学错误？

哈佛公开课 - 计算机科学课程节选