I base this conclusion not on any individual study, but on large-scale and systematic reviews of thousands of studies conducted in every major English-speaking country.
我的结论不是基于任何个体研究，而是基于对每个主要英语国家进行的数千项研究的大规模系统回顾。
2
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。
3
Having taught English in Shanghai for a decade, he always knew that the old technology of classrooms and books would never "scale" to cover the world.