In an ideal world, where you can borrow and lend freely, an individual could choose consumption along any point on this line.

在理想情况下,你可以随意借贷,每个人都可以将这条线上任意一点,作为自己的消费额

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and ideally at some point coal, coal-fire power plants.

理想情况下，在某个时间点可能还会关闭煤炭以及燃煤电厂。

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Right now we told you Joule did all these experiments and he found out that for an ideal gas, that the limit in and ideal gas 0 case was that the eta J was equal to zero.

现在我告诉你们焦耳,做了所有这些实验,他发现对于理想气体,在极限情况下理想气体的ηJ等于。

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