For all we know, he may not even be in this country.

说不准，他或许都已不在这个国家了。

《柯林斯英汉双解大词典》

For all we know, this could be part of a grand tourism plan.

据我们所知，这可能是一个宏伟的观光计划的一部分。

youdao

All we know is that in 610 A.D., a monk in northern Italy first twisted the pretzel into its unusual shape.

我们所知的只是在公元610年，意大利北部有位修道士第一次把一种椒盐卷饼扭成不同寻常的形状。

youdao

why,when we do not sleep, we do not function well. We just do not know much about sleep at all."

VOA: special.2009.08.26

And all we know about this is that it's really for some irreversible reversible step.

我们知道,这个式子,对不可逆过程成立。

麻省理工公开课 - 热力学与动力学课程节选

and you know, we're all trying to make the... trying to interact with the audience in a positive way,

而且你知道，我们都试着以一种积极的方式与观众互动，

我是摇滚音乐家 - SpeakingMax英语口语达人

All we know is, it's the biggest damned phone we've seen in a very long time.

ENGADGET: Editors Letter: Sir Galaxy the Fourth

Until then all we know is that this is a bit of a curious cocktail.

ENGADGET: Windows Phone 8S by HTC hands-on: a bright Windows phone that holds promise (video)

So far, all we know is what the school maintains is their reason for suspending the teacher.

FORBES: South Carolina Teacher Suspended For 'Ender's Game' Also Read Students Agatha Christie [Updated]