它通常只发生在彼此非常亲近的人之间，比如夫妻。

It usually only happens between people who are really close to each other, like couples.

youdao

我们彼此非常了解对方。

We understood one another perfectly.

youdao

但我们彼此非常了解。

But we understand each other well.

youdao

Simply where and how they stand in relation to each other as they speak is important.

他们说话时的位置和怎样面对着彼此,非常重要。

耶鲁公开课 - 现代诗歌课程节选