And so you can look, for example, at the Periodic Table And, if you look up the atomic mass of carbon, 011 you will see that carbon comes at 12.011 for carbon.

如你们所见，例如，在周期表中,如果你观察碳的原子质量，你会看到是12。

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in terms of quality. I know, for instance, that I wanted to go to see an exhibit last April,

就质量而言。例如，去年四月我想去看展览，

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