Too many people are wasting time and energy in relationships without knowing why they are there.

有太多的人，他们在不同的关系中浪费着时间和精力，却不知道自己为什么这样做。

youdao

Sometimes we do things without knowing why. If we don't, the reasons may lie deep in our unconscious minds.

有的时候我们做事情却不知道为什么要这么做，原因可能就在我们深层的潜意识里。

youdao

Reading a blog or following someone else's lead without knowing why they are making the trade is a recipe for failure.

在不清楚别人交易的原因而去阅读其博客或胡乱跟风，亦是交易失败的其中一个原因。

youdao

So, either James Murdoch has to continue to plead ignorance, opening himself to the charge that he's the sort of guy who writes massive cheques without knowing why or asking questions which could and should have revealed what had really been going on.

BBC: Updates from inside James Murdoch hearing

Why would companies expand or invest without knowing their regulatory burden?

FORBES: Dodd-Frank Is The Very Definition Of Tyranny