As you begin to move into your "nightly routine, " your mind will get the signal that it's time to chill out and tune down, dialing down stress hormones and physiologically preparing you for sleep.

随着你开始进入每晚程序化步骤，你大脑就接收到了信号是时候冷静下来，平稳心情，降低应激激素了，从而生理上调整你的睡眠状态。

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"I [went] downstairs to try to get paper towels [and] by the time I got down there I couldn't remember what I went down there for," she says.

“我下楼去要拿一些纸巾，等到了哪里，我竟然忘了下楼要干什么，”她说。

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People who burn or cut down trees do it for different reasons: farmers cut down trees in order to get more fertilize lands to grow rice or vegetables, and use the woods as fuel.

人们砍伐树木出于种种原因：农民们为了得到更肥沃的空地来种植大米蔬菜，砍下的树木用来取火。

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"I think we're going to get the upper level winds carrying that ash down for a few more days yet until the upper wind patterns change which will probably not happen until the time frame Thursday-Saturday.

VOA: standard.2010.04.17

Nutrients get broken down into several classes and these are the constituents of food that your body uses for one purpose or another.

营养素这个问题需要花几节课来讨论,它们是食物的组成要素,供给身体吸收,支持身体机能运转

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

You're not going to need to know a lot about this for this course, but this is--I wanted to get the basic ideas down.

对于本门课程来说,你不必,对刚才讲的概率的知识有很深入的了解,我只想介绍一些概率论的基本概念

耶鲁公开课 - 金融市场课程节选

But now you can sort of walk down the street and who knows, you might get a bullet just for walking down the street.

NPR: After Israel: A Lebanese Village Struggles

As we get closer, Christensen motions for me to get down on the ground.

WSJ: Walk With the Animals

Companies like Fluor and KBR get paid for engineering down the line, from the facilities to get the gas out of the ground, to the gas-to-liquids operations necessary to transport the product, to the manufacturing plants around the world designed to run off the product.

FORBES: The Engineers -- Fluor and KBR -- a Saner Play on Natural Gas?