We have to study hard, don't we?

我们必须努力用功，不是吗？

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I used to play with friends on weekends, but now we have to study hard together.

我曾经在周末的朋友一起玩，但现在我们要一起努力学习。

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For ten months, we have talking about coming to study in the United States.

VOA: special.2009.07.16

But you can imagine the inability to do that in a big population study with thousands and thousands of subjects, so we have to rely on data like this.

但你们可以想象在一个大样本研究中,不可能对数以千计的研究对象做这种培训,所以我们需要依靠像这样的数据

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Way back in nineteen-eighty-two, we did a study on this, and then I'm going to show you some similar studies that have been done in subsequent years to show you how much the error is.

回到1982年,我们做了一个这样的实验,你们将看到一些类似的实验,是在随后几年中做的,向你们证明误差有多大

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

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