They're sort of bad things that could happen to you One particularly trendy sleep disorder that's been discovered recently are side effects of sleeping pills such as Ambien.
这时你睡觉时会遇到的,其中一个现在很多人研究的睡眠障碍是,最近发现的,服用安必恩这样的安眠药有什么副作用。
then you've got hedges and bushes and now cars and all sorts of things you got to go over.
然后你会遇到树篱、灌木,现在还有汽车,诸如此类的东西,你都得绕过去。
Right now at this point in our course, whenever you have a problem where there is some body and someone says, "Write all the forces on it", what you have to do is very simple.
现在在我们这个课程里,如果你遇到一道题目,题目给了你一个物体,并要求你,"写出该物体所受的所有力",你要做的其实很简单
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