During your exam period, you want your brain to work at its very best, so build in relaxation time before bed, avoid late night revision sessions and try to go to bed early so you get enough sleep.
在考试期间，你想让你的大脑处于最佳工作状态，所以在睡觉前安排放松时间，避免深夜复习，尽量早点睡觉，这样你就能得到足够的睡眠。
Sleep efficiency (the time spent asleep compared to time in bed), falls from its high values in youth (95%-98%) to 70%-80% in older age.
睡眠质量(睡眠时间与在床上的时间比)从年轻人的95% - 98%下降到老年人的70% - 80%。
She said: 'Chelsea should keep a tighter leash on their players. It is a great club, but they are tainting its image by trying to bed women every time they go out.'
她还说：“切尔西应该好好管教一下它的球员们，这是一家伟大的俱乐部，但是队员们每次外出都搞一夜风流让俱乐部形象受损”。
In a few minutes' time we were stepping out sharply across the great cultivated plain or lake bed, framed like a vast emerald in its setting of frowning cliff.
几分种后，我们就轻快地行走在精耕细作、象翡翠一样镶嵌在起伏不平的峭壁间的平原或者也可以叫做湖床的上面了。
The results show that: the switch time of air and the bulk of storage bed play important roles as regards its thermal performance characteristics.
结果表明，空气的换向时间、蜂窝陶瓷蓄热体换热器的体积等是影响其温度效率和热回收率的重要因素。
I think its time you went to bed.
我想你该睡觉了。
She said: 'Chelsea should keep a tighter leash on their players. It is a great club, but they are tainting its image by trying to bed women every time they go out.
她还说：“切尔西应该好好管教一下它的球员们，这是一家伟大的俱乐部，但是队员们每次外出都搞一夜风流让俱乐部形象受损”。
At the same time the effects of various components of coal bed methane on the engine's combustion process and its emissions are also analyzed.
同时分析了煤层气组分变化对燃烧过程及排放物生成的影响。
In these implicit scenes, young lovers lean against a bed whilst floating high above the city buildings. Its allegoric tension reminds us Marc Chagall's warm pictures of a space-time paradise.
在这些个皮相化虚拟的场景中，偎傍在床上的小伙子相恋一方飘浮在都市的楼群上面的天空，它寄意耐人寻味的拉力让人想起夏加尔那一些时空穿插中暖和而又忧戚的银幕。
In these implicit scenes, young lovers lean against a bed whilst floating high above the city buildings. Its allegoric tension reminds us Marc Chagall's warm pictures of a space-time paradise.
在这些个皮相化虚拟的场景中，偎傍在床上的小伙子相恋一方飘浮在都市的楼群上面的天空，它寄意耐人寻味的拉力让人想起夏加尔那一些时空穿插中暖和而又忧戚的银幕。
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