The idea of the brain as a muscle – "use it or lose it" – is far from established; the evidence for the benefits of "brain training" software, or doing the crossword daily, remains patchy.

大脑和肌肉一样“越用越灵活”的观点还远未被确证；也没有过硬的证据证明使用大脑训练软件或每天做填字游戏等活动的益处。

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Many of these end up doing jobs which require little or no training such as hotel porter, postman, cleaner or catering assistant.

他们中的很多人最后都从事了一些几乎不用或根本不用培训的工作，如酒店门房、邮递员、清洁工或是餐饮助理。

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As your trolley fills up, you're effectively doing resistance training, firming up arms, legs and torso.

当你推着满满的手推车时，你其实在做有效的阻力训练，让你的手脚和身体都更结实。

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In its projects, the unemployed work alongside young high-fliers seconded from private firms, receiving training as well as doing voluntary work.

ECONOMIST: Unemployment policy

Thorstein Veblen's suggestion in 1918 that by doing any undergraduate training at all the university was in danger of becoming a body of secondary-school teachers masquerading as something much grander has not lost its sting.

ECONOMIST: Higher learning and the middle classes