One Gallup poll found that 20 percent of Americans, who have been unemployed for at least a year report having depression, double the rate for working Americans.

一项盖洛普民意调查发现：在失业至少一年的美国人中，有20%的人都存在抑郁的情况，这一比率是在职美国人的两倍。

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Toughened bulletproof double glass door, to observe clearly the object in the working chamber.

钢化、防弹双层玻璃门观察工作室内物体，一目了然。

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Intelligence officials say Balawi was a double agent, posing as a Jordanian informant but working for the al-Qaida terror network.

VOA: standard.2010.01.09

So your public servants are working double overtime to address these critical issues.

WHITEHOUSE: Town Hall in Los Angeles

If anything's not working double check all spelling and re-read this guide.

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We ride collective transportation such as buses, trains and airlines fairly certain that drivers and pilots are sober, trained and not exhausted from working double shifts.

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