结果：按患病人数与患病人次数两周患病率城区均低于农村，且低于全国水平。
Results Two-week prevalence rate of city was lower than that of country and the countrywide level.
社交网络和智能手机工程被证明为最具持久力，远高于平均使用水平且低于平均水平的流失率。
Social networking and smartphone utilities proved to have the most staying power, with above-average usage and below-average deletion rates.
她低于平均身高，娇小且苗条。
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