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Let's say you go home for Thanksgiving break and your grandmother says, "What have you been doing at Yale?"
如果你感恩节假期回家 你奶奶问你，你在耶鲁都学了点什么“
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Maybe you're talking with a friend about where you should go for spring break vacation,
假如你在跟一个朋友讨论你们该去哪里过春假。
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If you go to Denmark and you break a $100 bill, you're going to be given one of these, undoubtedly, the 500 kroner note, which is worth about $75-80, and it has Niels Bohr on it.
如果你去了丹麦，换了100美元，毫无疑问，你会得到其中一个像这样的，500挪威币，约为75-80美元，上面有波尔的头像。
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Is this possible? That's what the first law says it's possible; work is heat, and heat is work, and they're the same thing. You can break even 100% maybe. So let's go back and see what work is.
00%的效率,我们可以从大气中吸收热量，用来驱动我们的汽车,效率也应该能达到。
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Why don't we go ahead and take a 5-minute break and I'll let this one run to completion.
下面我们先休息5分钟,等它们执行完毕。
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Why don't we go ahead and take a five-minute break?
为什么我们不开始休息5分钟呢？
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Why don't we go ahead and take our five-minute break.
为什么我们不休息5分钟。
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