不了解的

He gave us a warning against placing confidence in people we did not know.

他告诫我们, 不要轻信我们不了的人。

We don't know all the circumstances, so it would be pointless to speculate.

我们不了所有的情况, 妄加推测没有意义的。

They were not blinded to the defects of Western society.

他们并非不了西方社会的缺陷。

She had no appreciation of the difficulties we were facing.

她不了我们所面临的困难。

One unversed in such matters can have no notion of the many and tragic things that can happen to a chicken.

不了养鸡的人很难想象一只鸡会遭遇多少灾难。

Show an interest in other people, but don't discuss anything that you wouldn't talk about with your grandmother or religious officiant -- especially with a coworker you don't know extremely well.

对别人表示感兴，不要谈论那些你不会和祖母或宗教主祭谈论的话题，特别和一位你了并不深的同事。