When 28% of English children aged two to 15 are obese, a national shift on the scale achieved by Leeds would lengthen hundreds of thousands of lives.
英国2至15岁儿童中有28%患有肥胖症，利兹市所实现的全国性转变将延长数十万人的寿命。
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Conventional wisdom would seem to suggest that companies have no incentive to lengthen the life cycle of their products and reduce the revenue they would get from selling new goods.