我只要知道得早一点，就会拍电报给你了。

If only I had known earlier, I'd have sent you a telegram.

youdao

我只要知道我该干什么就足够了，并且不为别人担心。

'It's enough to understand his own business, and not worry about other people's.

youdao

不过也没有甚么关系，我只要知道他是个魔鬼，也就能忍受得了。

However, that doesn't matter, I shall know who it is;

youdao

So I don't know if it Does it matter what you say to babies as long as you say something.

所以我想知道,是不是只要你对婴儿说话就行,说话的内容并不重要

耶鲁公开课 - 心理学导论课程节选

Conversely, if I knew the velocity of this object, I also know what time it is, provided I knew the initial velocity.

反过来,如果我知道了这个物体的速度,我也同样可以知道时间,只要初速度是已知的

耶鲁公开课 - 基础物理课程节选

I was wondering if you'll be willing just to offer, I don't know if it's culty prayer, whatever you feel comfortable, maybe reciting just a few lines because I know your voice is exquisite.

你是否愿意为我们，我也不知道这是不是祷告，只要你觉得合适的，就为我们吟诵几句话可以吗,因为我知道你的声音非常的优雅。

普林斯顿公开课 - 人性课程节选