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来源:雅诚德英语网
The researchers analysed data from 120 American counties, 20 of which had banned smoking.
研究者分析了从120个美国郡县搜集来的资料,其中的20个郡县颁布了禁烟令。
The researchers analysed data from 120 American counties, 20 of which had banned smoking.
研究者分析了从120个美国郡县搜集来的资料,其中的20个郡县颁布了禁烟令。