technology and economic growth have conspired to create a world in which the flexing ofmuscles is more and more an option rather than a necessity.
科技和经济发展合谋创造了一个新世界,在这个世界里,锻炼身体越来越成为人们的一种选择,而非迫切的需要。
But only recently have enough good data been collected from enough places to carry out thesort of analysis Dr Hallal and his colleagues have engaged in.
但直到最近,Hallal博士和他的同事才从足够多的地区收集到了充足的数据来进行这类分析研究。
In all, they were able to pool data from 122 countries, covering 89% of the world spopulation.
Hallal博士和他的同事总共收集了122个国家的数据,覆盖了89%的世界人口。
They considered sufficient physical activity to be 30 minutes of moderate exercise fivedays a week,
他们认为,充足的体育锻炼应该是每周五天进行半小时的适量运动,
20 minutes of vigorous exercise three days a week, or some combination of the two.
或是每周三天进行20分钟的激烈运动,或者对这两者进行适当结合。
There are common themes in different places.
不同的地区出现了同样的模式。
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