Most people require between 7 and 8 hours each night. If needed, set a bedtime reminder alarm on your alarm clock.

大多数人每晚需要7-8小时睡眠，如果需要的话，在你的闹钟上设置一个睡前提醒闹铃。

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If needed, it will do so again.

如果需要，它会再来一遍。

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If needed, you could supply your own custom masking function.

如果需要，您可以提供自己的自定义屏蔽功能。

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It didn't-- if you needed more time to get some business done you'd have to borrow, but you'd only have to pay 1% a year.

如果你需要更多时间来完成业务,你需要借款,而只需付1%的年利息

耶鲁公开课 - 金融市场课程节选

The seat liners are key because the escape module -- if needed -- would land on the ground and the seats need to fit precisely to properly protect a returning astronaut or cosmonaut, according to Mark Ferring, the flight director for Alpha.

CNN: newcrew

Second - as if you needed telling - retailing will for some time remain all about trying to win a bigger slice of a cake that cannot grow in any meaningful way.

BBC: Sainsbury's tells shoppers�� story

The trust can pay income--and if needed, principal--to your spouse, but when he or she dies, the principal goes estate-tax-free to your kids, bypassing your spouse's estate.

FORBES: Magazine Article