深入了解历史背景能让我们知道很多。

Digging into the historical context tells us a lot.

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烟花的一个有趣的地方是，它们的历史让我们知道很多关于欧洲科学家和技术人员之间不断变化的规则。

An interesting aspect of fireworks is that their history tells us a lot about the changing rules of scientists and technicians in Europe.

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我们知道很多慷慨的行为都和健康相关联。

So we know that a lot of generous behaviors are associated with consequences for health.

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That is to say for many, many, many people literary theory had something to do with the end of civilization as we know it.

这就是说对于很多很多人来说,文学理论与,我们所知道的文明的结束有些关联。

耶鲁公开课 - 文学理论导论课程节选

And we see this, because a lot of these companies come to us because they want to see if they can learn this from us.

我们知道是因为，很多这样的公司找到我们,希望向我们学习。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

So it turns out that we can really know a lot just by looking at the periodic table.

可见，我们只是看看元素周期表,就能知道很多信息。

麻省理工公开课 - 化学原理课程节选