水的污染物含量
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water contaminant level
水污染水平
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Milk samples from Phoenix and Los Angeles contained iodine-131 at levels roughly equal to the maximum contaminant level permitted by EPA in drinking water, the data shows.
FORBES: Radiation Detected In Drinking Water In 13 More US Cities, Cesium-137 In Vermont Milk
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