US Air Force warns Facebook 'may reveal location'.

美国空军警告FacebooK“可能暴露位置”。

youdao

A mechanic inspects a Reaper at a US air force base in Nevada.

一名机械师在美国内华达空军基地检查“收割机”无人机。

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The US Air Force and NASA have expressed interest in it, according to Roy.

罗伊称，美国空军及国家航空航天局均对此表示了兴趣。

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"What is electric mobility going to give us? Not only on the ground but in the air?

VOA: standard.2010.08.11

We're still close enough to the summer that the air is not just filling us up with extra static electricity, so it's a little more challenging here.

我们现在离夏天更近了,这样空气中不总是,充满额外的静电，所以这时做实验,会有一些挑战性。

麻省理工公开课 - 化学原理课程节选

If NASA's plans mostly involve the future, the US Air Force budget is looking into the past.

ENGADGET

International flights are subject to severe disruption, and US air space is still closed to civilian flights.

BBC: Bush calls attacks 'acts of war'

The Public Administration Committee are questioning Lt Col Dan Ward of the US Air Force, via video link.

BBC: Week ahead in committee