大多数学生知道这个资源是存在的。

The majority of folks know that this resource exists.

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没有一个医生知道这种病的病因。

None of the doctors knew the cause of the disease.

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许多人说他们理解为什么父母想让孩子带手机，但他们认为学校应该让学生知道什么时候才可以使用手机。

Many people say that they understand why parents would want their children to have phones, but they think schools should let the students know when they can use their mobile phones.

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What we think of as the golden age of Greece was virtually at an end during the lifetime of Aristotle.

我们所知的希腊黄金时期,在亚里士多德的生年,其实已走到末端。

耶鲁公开课 - 政治哲学导论课程节选