而肥胖在美国各社会经济阶层的发生率并不平均，以中等和中等以下收入群体为最多。
Obesity does not occur evenly across all socio-economic strata in the U.S.; it is far more prevalent in middle to lower income groups.
不过，PC的分布并不平均：在美国每100人拥有70台电脑，而法国只有35台，巴西7台，中国只有3台。
But the PC's spread has been uneven: in America there are 70 PCs for every 100 people, compared with 35 in France, 7 in Brazil, and 3 in China.
而肥胖在美国各社会经济阶层的发生率并不平均，以中等和中等以下收入群体为最多。
Obesity does not occur evenly across all socioeconomic strata in the U. s.; it is far more prevalent in middle to lower income groups.
在发达国家中，决定健康的关键因素是收入不平等而不是平均收入水平。
In the developed world, income inequality, not average income, is the critical component in determining health.
在发达国家中，决定健康的关键因素是收入不平等而不是平均收入水平。
In the developed world, income inequality, not average income, is the critical component in determining health.
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