Most people need seven or eight hours of sleep to feel their best during the day.

大多数人需要七到八小时的睡眠才能在白天保持最佳状态。

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Enjoy some photos taken during a seven-day tour in the Urals!

欣赏一些在一趟乌拉尔山七日游期间拍的照片吧！

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One in seven reported suffering from a health condition such as sleep apnoea that makes them tired during the day.

有七分之一的驾驶员患有不利于驾车的健康问题，比如说睡眠呼吸暂停症，它会使人整天感到非常疲乏。

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More than five thousand musicians are expected to perform during the huge seven-day event.

VOA: special.2009.05.01

Over the first month and a half of the season, there were more than nine new injuries per day up from seven per day during the 2010 and 2011 campaigns, according to Doug VanDerwerken, a Duke Ph.

WSJ: Bulls: Does Chicago Need Derrick Rose?

If the proposals generate more than 7, 000 public comments during a seven-day period, it will trigger a vote by users to approve the changes.

BBC: Privacy groups call for Facebook changes U-turn

"Every day during these past seven months, we have hoped and prayed for this moment, " said the statement, which was provided to CNN by The New York Times .

CNN: New York Times reporter escapes Taliban