How do I know when to change my oil?
如何确定更换机油的时间？
How do you tell when to change gear ?
你怎么确定何时换挡？
The key question is what to change, when to change, and how to change.
关键的问题是什么改变时，改变，以及如何改变。
Studies show that a man's brain measures speed and distance to know when to change direction.
研究表明，男性大脑通过估量速度和距离来知道什么时候转变方向。
When Leah made the commitment to change, she primed herself to new opportunities she may otherwise have overlooked.
当莉娅承诺要改变时，她鞭策自己为新机会做准备，否则可能会错失这些机会。
When I mentioned this change to one of his teachers, she joked that the coat must have changed him.
当我向他的一位老师提到他的变化时，她开玩笑说，一定是这件外套改变了他。
When you're doing something important, like launching a big project, or running some sort of campaign designed to change things, keep a scrapbook.
当你在做些重要的事情时，例如启动一个大计划，或开展一项以改变为目的的运动，那就做一个剪贴簿。
His experiments actually did show a lot about the relationships between colors themselves, about how colors change when placed next to other colors, about how they interact with one another.
他的实验确实展示了颜色本身之间的很多关系：和其他颜色放在一起时它们会如何变化，以及它们之间是如何相互作用的。
The ape shoulder is good for hanging from a tree, but when our ancestors started walking on two legs, the shoulder started to change.
猿猴的肩膀有利于其在吊在树上，但是当我们的祖先开始以两条腿走路以后，猿猴的肩膀也开始发生变化。
For those who snore only when sleeping on their back, placing a pillow under their upper back may encourage them to change sleeping position.
对于那些仅在仰卧时才会打鼾的人，在他们的上背部放一个枕头可以促使他们改变睡姿。
These act like batteries when they undergo a temperature change: attach electrodes to them and they generate a current.
它们经历温度变化时会像电池一样工作：给它们接上电极，它们就会产生电流。
When I speak to my archbishop in San Francisco, his role is to try to change my mind on the subject.
当我在旧金山和我的大主教谈话时，他的角色是试图改变我对这个问题的看法。
It was just when attitudes were really beginning to change and lots of new ideas were coming in.
那时正值人们的态度开始变化，许多新思想正在流行。
We found it quite a change when we moved to London.
我们搬到伦敦后，感觉生活变化很大。
It was a big change in lifestyle when we moved to the country.
我们迁居到乡下，这在生活方式上是个巨大的变化。
The waitress quickly went to get change, but the old lady was gone when the waitress came back.
女服务员赶紧去找零钱，但当女服务员回来时，老太太已经不见了。
Do not sit on another inmate's bunk without being invited to do so；do not change the television channel when someone else is watching。
在未受到邀请之前，不得坐在另一室友的铺位上； 他人正在观赏电视节目时，不得擅自改换频道。
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