youdao

而且很奇怪，它从来不会不达到目的。

It always reaches its goal strangely.

youdao

如果你收到这样的恳求，你是不会不遵照执行的！

If you receive a request like this, you cannot fail to obey it!

youdao

So, a massless body cannot have a net force on it, because the acceleration of the rope cannot be infinite.

所以没有质量的物体不会受到力,因为绳子的加速度不可能是无穷大

耶鲁公开课 - 基础物理课程节选

It's a very easy, very direct, not at all impolite way to express your desires in any situation.

这是个非常简单而直接的句型，用这样的句型在各种情形下表达你的愿望也不会显得不礼貌。

I want to 课堂 - SpeakingMax英语口语达人

Until they stop, both of them stop doing that, there is not going to be any peace in Afghnastan.

如果他们两方不停止，阿富汗就不会有和平。

普林斯顿公开课 - 国际座谈会课程节选