工人医生引用伊利诺伊州大学的研究说，听音乐能够使所有工人提高6.3%产出。

Workplace Doctor cites a Univ. of Illinois study that suggests listening to music improves “all types of workers” output by 6.3%.

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在过去，包括教师和医生在内的工人阶级的收入往往低于中产阶级。

In the past, the working-class tended to be paid less than middle-class people, such as teachers and doctors.

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在我看来，做一名水管工人或者砖匠，同做一名律师或者医生相比，所取得的成就是同样伟大的。

In my view, it is just as great an achievement to be a plumber or a bricklayer as it is to be a lawyer or a doctor.

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