We can't afford to be absent from class again.

我们再缺课的话就有麻烦了。

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A good student won't be always absent from class without asking for a leave.

一个好学生是不会经常旷课的。

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Those at the bottom of the educational heap tend to be white, working-class, Protestant boys from families in which academic aspiration is absent.

这些教育上的付出有助于他们成为白领、工薪阶层，而来自新教家庭的孩子则缺少学习愿望。

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