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。

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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。

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For all we know you could be calling a terrorist cell and giving them information.

据我们所知，你可能会给一个恐怖组织打电话，并给他们提供信息。

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"We will look for ideas from the bottom up. After all,Americans across the country know that the best ideas often come from workers,not just management."

VOA: standard.2009.04.25

The answer could turn out to be yes, for all we know at this point.

这个答案也许是肯定的,我们都知道这一点

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but as we all know, San Francisco is recognized for being in the forefront of gay rights issues.

但你也知道旧金山一直支持同性恋的合法权益。

关于旧金山的热点 - SpeakingMax英语口语达人

For all we know, someone shorted oil the day before this story broke, knowing it would do so.

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For all we know, much of the money raised yesterday could possibly go right back into GM stock.

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For all we know, women may hold high-level positions in a sector that does not have many female employees overall.

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