太好了。我不知道怎样才能报答你。

It was very kind. I don't know how I can ever repay you.

《柯林斯英汉双解大词典》

不论情况如何，父母应该知道做什么才能达到最佳效果。

Whatever the circumstances, parents are supposed to know what to do for the best.

《柯林斯英汉双解大词典》

我知道我得靠点运气才能取胜。

I knew I needed a bit of luck to win.

《柯林斯英汉双解大词典》

It turns out after you do all the math, H it turns out to be delta H equals zero.

要等你做完所有的计算之后，才能知道结果，结果证明Δ

麻省理工公开课 - 热力学与动力学课程节选

I know some of you come from Europe and other parts of the world where the ground floor is rez-de-chauss?e or some silly thing like this 1 and you push a button on the elevator to one and you go up to the first floor.

我知道你们中间有些人来自欧洲,或者世界其他地方，你们那里的一楼,和地面齐平，或者像这样可笑的事情,比如你要按下电梯的按钮,然后才能上到真正的1楼。

麻省理工公开课 - 固态化学导论课程节选

How can Milton know that he was really and truly called by God to be a great poet until he writes something - it's not a bad question - until he has something actually to show for his talent?

弥尔顿怎么知道他是不是真的被,上帝选中了去做一个伟大的诗人,除非他真的创作出点儿什么--这是一个不坏的问题,-直到他真有可以证明自己才能的作品？

耶鲁公开课 - 弥尔顿课程节选