如果我真的存在，也是因为你需要我。

I exist because you need me.

youdao

而是因为你需要我思念。

But because you need me to miss.

youdao

你知道这事情一定会发生我命中注定要出卖你…因为你需要我。

Do you know what will happen I was destined to betray you... because you need me.

youdao

I don't need to tell you the volume here, because you've got enough information to calculate the volume.

这里我不需要告诉你体积，因为你已经获得了足够多的信息,来计算体积。

麻省理工公开课 - 热力学与动力学课程节选

And it's pretty expensive to do so because I think they know you need to do it.

这样做很贵，因为我想他们知道你需要这么做。

公共交通更方便 - SpeakingMax英语口语达人

So if I try to rotate my 2 atoms, you see that I have to break that pi bond, because they need to be lined up so that the electron density can overlap.

如果我要试着转动两个原子，你会看到我必须要打破一个π键，因为他们需要连接起来,让那些电子能够重叠。

麻省理工公开课 - 化学原理课程节选