It's not always clear.

我们并不清楚。

youdao

It's not always clear, do you know by seeing or does seeing lead to an inadequate form of knowing?

通常并不是很清楚，你是通过所见来知道呢，还是说所知不一定需要所见呢？

youdao

There are many options, and it's not always clear what to do first and how it will all lead to achieving your goal.

有很多种选项，首先要做什么，以及怎样实现目标有时候并不是很明晰。

youdao

It is not always clear that eating something as harmless as wheat can be bad for a person's health.

VOA: special.2010.06.15

It's not always clear why Mr. Murray falls short when the pressure is greatest.

WSJ: Andy Murray Tries to Crack Tennis's Inner Circle

But as recent turmoil in the tiny but hugely important state of Delaware illustrates, it's not always clear what makes an account active or inactive.

WSJ: State Governments Eye 'Inactive' Broker Accounts

BlackBerry is taking scorn for its capricious ad depicting several fantastic scenarios created by, or solved by (it's not always clear what the heck is going on during the montage), the upcoming Z10 smartphone.

ENGADGET: Editorial: BlackBerry slumps into history of Super Bowl tech ads