事物都是一分为二的。

All things invariably divide into two.

《新英汉大辞典》

泰坦尼克号到底是怎样一分为二的原因为什么那么重要？

Why does it matter exactly how the ship broke in two?

youdao

奥巴马上周末对丹麦首相拉斯穆森将哥本哈根峰会的目标一分为二的的提议表示了支持。

Mr. Obama expressed support on Sunday for a proposal from Prime Minister Lars Lokke Rasmussen of Denmark to pursue a two-step process at the Copenhagen conference.

youdao

It means,when my brain gets split, my soul is going to end up in Lefty or in Righty,but not in both.

这个意思是，我的大脑被一分为二后，灵魂将只能进入小左或小右其中一个。

耶鲁公开课 - 死亡课程节选

And that the fact that it split into two was telling them that there must be some new property to the electron, and what we call that now is either being spin up or spin down.

它能一分为二的,事实告诉我们,电子一定有某种新的性质，我们叫它自旋向上或者自旋向下。

麻省理工公开课 - 化学原理课程节选

What you're doing there is actually subdividing the beat into two but don't worry about that. That's fine.

刚才你做的,实际上是把鼓点再更细致地一分为二了,不过不用在意,那也是可以的

耶鲁公开课 - 聆听音乐课程节选