The day dawned sunless and with a low cloud base.

黎明时天气阴沉，云层压得很低。

《柯林斯英汉双解大词典》

The vast source of water could one day be used to generate oxygen or sustain a moon base.

这个巨大的水源也许在未来的某一天可以用来制造氧气或者维持月球基地用水。

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Now, project-specific teams of engineers and project managers sit together and start their day with a short meeting to touch base.

现在，具体项目团队的工程师和项目经理可以坐到一块，以开门见山的简短会议开始一天的工作。

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Veterans Day came a day after the president spoke at a memorial service at the Army base at Fort Hood,Texas.

VOA: special.2009.11.14

A military official tells VOA the Chairman of the Joint Chiefs of Staff, Admiral Mike Mullen, traveled to Germany Friday for an unannounced half-day meeting on a U.S.Air Base with the Afghanistan commander, General Stanley McChrystal.

VOA: standard.2009.09.25

As banks and credit card companies struggle to develop an adoptable mobile solution, Apple continues to build a powerful user base day over day.

FORBES: What CIOs Need To Understand About Apple's Passbook Service

The Royal Navy has insisted HMS Turbulent was in Devonport Naval Base throughout the day.

BBC: Bugaled Breizh trawler sinking: Petition calls for debate

The Royal Navy insisted HMS Turbulent was in Devonport Naval Base throughout the day.

BBC: England