美国国家睡眠基金会称，你的睡眠时间长短很大部分取决于你的年龄。
The National Sleep Foundation suggests that the amount of sleep you need very much depends on your age.
据美国国家睡眠基金会的一项调查显示，约有三分之二的被研究者在工作日晚上睡眠不足。
According to a survey from the National sleep Foundation, roughly two-thirds of people studied do not get enough sleep on weeknights.
根据美国国家睡眠基金会，其它症状是：醒得过早、醒来以后难以再次入睡、经常中途醒来、醒来之后疲惫无力。
The others, according to the National Sleep Foundation are waking up early and not being able to fall back asleep, waking often, and waking up feeling unrefreshed.
美国国家睡眠基金会今天发布了每年的睡眠调查结果，他们调查了超过1500人，（受调查者）年龄段从13岁到64岁。
The National Sleep Foundation released results of its annual survey.
今天，美国国家睡眠基金会公布了一年一度的睡眠调查结果。该结果基于基金会工作人员对年龄介乎13到64岁1500多人所进行的问卷调查。
The National sleep Foundation released the results of its annual sleep poll today, where they surveyed more than 1, 500 people between ages of 13 and 64.
美国国家睡眠基金会2008年的调查结果显示，在1,000位受访者中，有28%的人表示瞌睡会影响他们白天的工作，每个月至少有几天会出现这种情况。
According to a 2008 poll by the National sleep Foundation, 28% of the 1, 000 respondents said sleepiness interferes with their daytime activities at least a few days each month.
美国国家睡眠基金会2008年的调查结果显示，在1,000位受访者中，有28%的人表示瞌睡会影响他们白天的工作，每个月至少有几天会出现这种情况。
According to a 2008 poll by the National sleep Foundation, 28% of the 1,000 respondents said sleepiness interferes with their daytime activities at least a few days each month.
国家睡眠基金会2005年的调查报告显示，近四分之一的美国夫妇或分室或分床而睡。
Nearly one in four American couples sleep in separate bedrooms or beds, the National sleep Foundation reported in a 2005 survey.
国家睡眠基金会2005年的调查报告显示，近四分之一的美国夫妇或分室或分床而睡。
Nearly one in four American couples sleep in separate bedrooms or beds, the National sleep Foundation reported in a 2005 survey.
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