Of course, they're all sorts of conditions under which a reaction could be wrong in the lab or outdoors or however, right. But this is the way we're going to define delta H of reaction.

当然，在实验室或室外,之类的环境中，在这些条件下,反应可能出错，但这是我们,要定义反应的△H的方法。

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They might be wrong or right about this: clearly other companies have come to a different conclusion.

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And Obama may be right about this approach, or he may be right at times and wrong at others.

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