So whether we finish it today, or more likely when we finish it up on Friday, once we get passed isoelectronic atoms, that's it, that's all you need to study for this first exam.
因此，我们也许今天讲完，或者更有可能周五讲完，无论如何，就到我们讲完等电子原子为止，这是你们第一次考试所需要准备的全部内容。
They say we need to study history so we won't repeat our past; I've studied my personal history, and will avoid my mistakes in the future.
他们说我们学习历史，以免重淘覆辙。 我已经认识到我的过往，我也将避免类似的错误。
We need to western study, don't you think so?
我们需要向西方学习，难道你们不这样认为吗？
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