环保局的统计资料表明，在去年，74座城市中只有3座符合污染标准。
According to environment ministry statistics only three cities out of 74 met government standards for pollution last year.
环保局的统计资料表明，在去年，74座城市中只有3座符合污染标准。
According to environment ministry statistics only three cities out of 74 met government standards for pollution last year.
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