The college, in the city of Xian in Shaanxi province, uses the "commitment card" during a course called No Regrets Youth class, according to the China Economic Daily website.

据中国经济日报网站报道，中国陕西省西安市某高校在一门“青春无悔课”上要求女生填写“承诺卡”。

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It deterred luxury consumers who found their expensive clothing more closely associated with working-class youth culture than a prestigious heritage fashion house.

这让奢侈品消费者望而却步，他们发现，与知名的传统时装店相比，自己昂贵的服装与工薪阶层青年文化的联系更为密切。

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David Cameron, their leader, trades on his youth as much as Gordon Brown, the prime minister, burnishes his middle-class social background.

保守党首领卡麦隆像英国首相布朗一样利用他的年轻人，把他中产阶级的社会背景弄得光鲜耀眼。

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The first is a developed world problem, the challenge working-class youth without higher education face finding work in a de-industrialized society.

FORBES: Getting Younger

Mr Gandhi, who at 42 is youthful by India's geriatric political standards, also spoke about the growing disconnect between India's youth and the political class.

BBC: Will Rahul Gandhi walk the talk?

More important, the key group leaving New York and other so-called "youth-magnets" comprises the middle class, particularly families, critical to any long-term urban revival.

FORBES: New Geographer