Why is one man a genius in his work or profession while the other man toils and moils all his life without doing or accomplishing anything worthwhile?

为何有的人在其工作或专业中造诣非凡，而有的人在他的一生中劳心劳力，却没有做或完成任何值得花精力去做的事？

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One resume included a photo of an attractive man or woman or a plain man or woman; the other had no photo.

一份简历中贴着一张美貌的男人或女人的照片，或者是朴素的男人或女人的照片；另一份则没有照片。

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To use the DHL mailing services, you have to call the delivery man or to bring the parcel to one of the DHL offices in Moscow or other cities.

如果你需要使用DHL的邮寄服务，你只需打电话给莫斯科或其它城市的DHL办公室，他们会派快递员登门取件。

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But if two people carry firearms, a confrontation that might otherwise have ended in words or blows ends instead with one man dead, and the other man on his way to prison for life.

CNN: America's gun problem is not a race problem