The amount of time youngsters spend in front of the television, the rise of obesity and the pressures of modern family life have all been picked out as possible causes.

青少年过度沉迷于电视，肥胖症的增多，现代家庭生活的压力，这些都是可能导致这一现象的原因。

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In fact, the American Academy of Pediatrics says parents of young children should limit the time youngsters spend watching television or videos.

美国儿科学会指出，实际上父母应该限制小孩子收看电视或者视频的时间。

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In an in-depth study of children, one researcher discovered that the youngsters would narrow the field and start working on their stresses one at a time.

在一项深入研究儿童一位研究员发现，青少年将缩小其工作领域，开始一个一个地讲。

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Singapore youngsters may not like being cooped up most of the time, but the authorities believe it is the only way to ensure those kinds of figures are not repeated.

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Ms Marshall marked her first day in office as children's commissioner by questioning the need for anti-social behaviour measures, saying at the time that plans to tag youngsters and disperse groups of youths were punitive.

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The timing of the row was suspicious: Mr Balls made the allegations at the same time as his department published figures showing that a fifth of youngsters transferring to secondary school had missed out on their first choice.

ECONOMIST: School admissions