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Of course in the reversible case, you're always pushing against an external pressure, which is essentially equal to the internal pressure.
当然在可逆的情况下，外压力，总是，等于内部压力。
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Sometimes I write my feelings down on paper to release stress.
有时我会把我的感受写在一张纸上来释放压力。
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Let's imagine maybe instead we just immediately dropped the pressure let the system expand against the lower pressure.
现在假设,我们很快地降低压力,让系统在低的外压力下膨胀。
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You have a little more pressure in grad school, but sometimes that means when you're an undergrad your advisor will decide to put you on projects that maybe when you look at them seem a little bit silly.
那就是你们没有，要做出重大发现,或取得重大成就的压力,你们在研究生时候会有些压力,当然有时候这意味着。
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Now how many of you--let's just get a show of hands, how many of you would say you eat more when you're stressed?
大家举一下手,有多少人,有多少人在压力大时会大吃特吃
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we have consumers under pressure because of their overextension of credit and they're having overpaid for houses over the last handful of years.
一些承受压力的消费者,因为过度贷款,他们不得不在过去的几年时间里,在买房子的时候花费了更多的钱。
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And you're saying that probably that should, I don't want to press you too hard.
您在说那可能应该，我不想让您感到太大的压力。
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So, for example, when the body is in stress, as would likely happen toward the end of the biological processes, when the body is in stress, certain endorphins get released by the body.
比如说 当身体受到压力,这在生物学过程的末端,极易发生,当身体受压时,身体就会放出一定的内啡肽
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and the pressure of competing in your home nation.
并且适应在自己祖国比赛的压力。
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This is a terribly stressful experiment to do to people and, as I say now about a lot of studies that I describe in this class, it would not today be done.
这些在人身上进行的实验非常有压力,正如我说过，有很多,我在课堂上讲过的实验，在今天都是不能进行的。
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If you experience a lot of stress in high school and elementary school and were unhappy, generally the best predictor would say that you would feel the same way a month into your Harvard experience.
如果你在高中,初中时经历过很大压力而且不快乐，一般来说最好的预言家会说,在哈佛呆上一个月，你会有同样的感觉。
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And he's seen me work under pressure.
而且他见过我如何在压力下工作。
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And so the photons hitting the wall actually put pressure on the wall, but the pressure is so low.
所以光子碰撞墙面,事实上在对墙加压，但只是压力很小。
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The adult learner has enormous pressures on them to not take time out to learn, but instead to continue working in their working environment and in the context that they are in the day-to-day environment.
成年学者压力很大,他们不能抽出时间学习，只能在工作场所,不停地工作,在这种情况下,他们每天处于一个环境。
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Because we did work at constant pressure, and so it's just volume difference times pressure.
因为是在恒压下做功，所以功就等于体积变化乘以压力。
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They got lost in the fear or pressure performing at this high level.
在恐惧和压力下，因赛事之高,而迷失。
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So the force that you're pushing down on here is the external pressure times the area.
或者压缩功的概念,在活塞上施加压力。
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In times of stress and trauma, they'll become younger, they will act younger.
在他们感到压力和受伤的时候，他们回到更加年幼的阶段，表现出年幼时的行为。
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