我们不理解他为什么不跟我们说话。

We can't understand why he avoided speaking to us.

youdao

我们都害怕我们不理解的东西。

We all fear what we do not understand.

youdao

此外，课后我们能够找到我们不理解的视频，然后再研究。

Moreover, after class we can find the videos which we did not understand and then study again.

youdao

We can't help understanding. We always already understand, which has nothing to do again with whether or not we're right or wrong.

我们控制不住地去理解，我们总是已经理解了，这与对错无关。

耶鲁公开课 - 文学理论导论课程节选

And I personally don't really understand why we need a Royal Family.

我个人真的不理解为什么我们需要一个皇室。

英国皇室的意义 - SpeakingMax英语口语达人

I mean we can, we can sort of understand why OK, the total energy, if we measure it, we measure a process which is not reversible.

例如我们易于理解为什么，当试图测量一个不可逆系统的总能量，给出的或许。

麻省理工公开课 - 热力学与动力学课程节选