However, the new drug, Xyrem puts Claire into a deep sleep for three-and-a-half hours so she must take a second dose in the middle of the night to get a full seven hours sleep.

然而，新型药物“Xyrem”可以让克莱尔处于深度睡眠，连续睡上三个半小时，所以在半夜她要再吃上一次药，保证自己可以有7个小时的深度睡眠。

youdao

Dr Stanley says having a nap during the day should not be used to replace sleep at night, but other researchers suggest that it could do you as much good as seven hours sleep at night.

Stanley博士说白天的打盹儿并不能代替晚上的睡眠，但其他的研究者称打盹儿是很有好处的，可媲美于晚上的7小时睡眠。

youdao

Most adults need seven to nine hours' sleep while teens need even more.

大多数成年人需要7到9小时的睡眠，而青少年所需时间更长。

youdao

Adults should try to get seven to eight hours of sleep a night.

VOA: special.2010.06.09

Study subjects who had less than seven hours of sleep were at greater risk than those who got eight hours of sleep a night.

CNN: Study: Can more sleep help fight off colds?

For the study, very short sleep patterns were defined as less than five hours a night, short sleep was five to six hours a night, standard sleep was seven to eight hours, and long sleep was nine or more hours a night.

CNN: Does your diet influence how well you sleep?

Fu, who describes herself--inaccurately--as "pretty relaxed, " claims she usually gets seven hours of sleep a night.

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