A spurt of diesel came from one valve and none from the other.

一股股柴油从一个阀门喷涌而出，但另一个没有。

I do not know the one from the other.

我不能辨别二者的差异。

Learn how to distinguish one from the other.

学习如何辨别之间的差别。

The twins are so alike that I can't tell one from the other.

那对双胞胎太像了以致我不能把他们区分开。

They're twins and it's almost impossible to know one from the other.

他们是双胞胎，几乎不可能分辨他们。