If you do, this is your nightly sleep need.
如果是，那么它就是你每晚所需睡眠数。
Sleep need is partly genetic and may be determined by other factors that also influence life span, he says.
睡眠的需求一部分取决于基因，也可能取决于其他一些因素，这些因素还影响生命的长短。
The need for sleep varies considerably from person to person.
不同的人对睡眠的需要差异相当大。
It's definitely a myth that older people need less sleep.
老年人需要更少的睡眠，这绝对是一个荒诞的说法。
They sleep very deeply, and need little or no food.
他们睡得很沉，几乎不需要进食。
When you sleep through the alarm or simply need an extra 10 minutes, you can just pluck it off the hanger and go.
当你睡着一直没听见闹钟，或者只是需要多睡10分钟的时候，你可以把闹钟从衣架上拿下来就走。
If you are going to sleep, you need yo put on your pajamas.
如果你要睡觉的话，那就把睡衣穿上。
These results suggest that if a business wants to prosper, it should hire only people who need less than 6 hours of sleep per night.
这些结果表明，如果一个企业想要成功，它应该只雇佣每晚睡眠时间少于6小时的人。
I find that I need very little sleep these days.
我觉得我现在需要的睡眠很少。
I need a decent night's sleep.
我需要好好地睡上一夜。
我得睡一会儿。
I need more time to sleep on it. It's a big decision and I want to make the right one.
我需要更多的时间再考虑一下。这是个重大的决定，我想做出正确的决定。
Can we train ourselves to need less sleep?
我们可以训练自己不需要那么多睡眠吗？
In our society, you're considered dynamic if you say you only need 5.5 hours' sleep.
在我们的社会，如果你说你只需要5个半小时的睡眠，人们就会认为你很有活力。
我要去睡觉了。
In places like Bali and New Guinea, people tend to slip in and out of sleep as they need it, napping more during the day, and getting up more at night.
在有些地方，例如巴厘岛和新几内亚，人们喜欢随时根据需要进入睡眠和醒来，白天时不时的打个盹儿，晚上却经常的爬起来不睡觉。
That suggests that catch-up sleep may undo some but not all of the damage that sleep deprivation causes, which is encouraging, given how many adults don't get the hours they need each night.
这表明补觉可以弥补部分但不是全部睡眠缺乏造成的损害，考虑到有很多成年人每晚都没有得到他们所需的睡眠时间，这令人鼓舞。
Sleep is, after all, a very basic need.
毕竟，睡眠是十分基本的需求。
In order to ensure our kids get the sleep they need, both parents and schools should make an effort.
为了确保我们的孩子获得所需的睡眠，父母和学校都应该做出努力。
To prepare for this before winter, these animals eat extra food to become fat which gives them the energy they need while they sleep.
为了在入冬前做好准备，这些动物会吃更多的食物来增肥，从而获取睡眠时所需的热量。
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。
The older you get, the less sleep you will need.
年龄越大，所需睡眠就越少。
Children and teenagers need nine to ten hours of sleep, while adults need six to eight.
儿童和青少年需要9到10个小时的睡眠，而成年人需要6到8个小时。
How long do teenagers need to sleep?
青少年需要睡多久？
Giraffes don't need much sleep at all.
长颈鹿根本不需要太多的睡眠。
Teenagers need 8-10 hours of sleep a day because they need lots of energy to grow into their adult bodies.
青少年每天需要8-10个小时的睡眠，因为他们需要大量能量来长成成年人的身体。
Children need 10-12 hours of sleep a day.
儿童每天需要10-12个小时的睡眠。
Grown-ups usually need 6-8 hours of sleep to keep active.
成年人通常需要6-8小时的睡眠来保持活力。
Doctors and health scientists say: When you close your eyes and need to rest, sleep is just the very best!
医生和健康专家说：当你闭上眼睛需要休息时，睡觉就是最好的！
In general, babies need fifteen to sixteen hours of sleep a day.
一般来说，婴儿每天需要15到16个小时的睡眠。
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