这种特殊的文化背景或许是《流浪地球》区别于好莱坞式太空电影的关键所在。

This special cultural background is probably the key that separates The Wandering Earth from Hollywood-style space films.

youdao

这就是问题的关键所在。

This is the crux of the matter.

《新英汉大辞典》

而且这是我们两国关系的关键所在。

And that is the key to our relationship.

youdao

Does it really matter to you whether your code is going to take 300 years or 900 years to run?

或者900年区别大么？,这个数字的规模才是问题关键所在？

麻省理工公开课 - 计算机科学及编程导论课程节选

So if you know the answer and know what the fix is don't answer this.

如果知道答案,知道问题的关键所在，先不要说出来。

哈佛公开课 - 计算机科学课程节选

It's biological engines, right. Things that either produce or consume biological fuel to do different sorts of processes. Also, of course of key importance to understand what the, in that case, biological thermodynamics are.

但不只是我们制造的引擎,生物引擎也是如此,它们产生或消费生物燃料,来完成不同的过程，当然，这也是理解生物热力学的关键所在。

麻省理工公开课 - 热力学与动力学课程节选