Is that nine hours of sleep thing like mandatory or?

那九个小时的睡眠是强制性的还是？

Teenagers need eight to ten hours of sleep each night.

青少年每晚需要8到10个小时的睡眠。

So yes, we will gain an hour of sleep, hallelujah.

是的，我们可以多睡一个小时了，哈利路亚。

Getting at least 6 hours of sleep is crucial before an exam.

在考试前一晚最少睡六个小时是非常重要的。

You need to get close to 8 hours of sleep.

你需要接近8小时的睡眠。

So do we gain an hour of sleep or lose an hour?

那么我们是多睡了一个小时还是少睡了一个小时呢？

Three hours of sleep yesterday. It was a good fight last night.

我昨天只睡了三个小时，昨晚和野火的一战打得很好。

Experts say to try to get around seven hours of sleep each night.

专家建议大家每晚尽量最少睡7小时左右。

Gaining an extra hour of sleep if you plan your Saturday night well.

如果你好好计划你的星期六晚上, 就可以获得多一小时的睡眠。

Aim for seven to eight hours of sleep per night in addition to naps.

除了午睡之外，尽量保障每晚七到八小时的睡眠。

Many of you get an extra hour of sleep on Sunday, Daylight Saving Time.

你们中的许多人可以在周日夏令时多睡一小时。

Health experts say most adults need at least seven hours of sleep each night.

健康专家表示，大多数成年人每晚至少需要7小时的睡眠。

Health experts suggest that adults get seven to eight hours of sleep each night.

健康专家建议成年人每晚睡七到八个小时。

Other primates need as many as 14 to 17 hours of sleep.

而其它的动物则需要长达14甚至17个小时。

Many sleep experts say adults should aim for eight hours of sleep a night.

许多睡眠专家说，成年人应该以每晚八小时的睡眠为目标。

But for the vast majority of us, we need 7 to 9 hours of sleep.

但事实上对我们大部分人来说，我们需要7到9小时的睡眠时间。

The risk climbed as the hours of sleep dropped, with a 53-percent greater injury risk at six hours of sleep.

这一风险会随着睡眠时间的减少而上升，6小时睡眠的损伤风险会增加53%。

To make things worse, most countries take away that hour of sleep on a Monday morning.

更糟的是，大多数国家剥夺走的这一小时睡眠是在星期一早上。

Number five, eight hours of sleep.

第五，八小时睡眠。

To function their best, experts say teenagers need at least nine hours of sleep every night.

为了使得身体机能维持最佳状态，专家认为青少年每天至少应该睡9个小时。