The states then were to identify the specific point sources preventing the attainment of standards, and the amount of each toxic pollutant discharged by each such source.是什么意思_The states then were to identify the specific point sources preventing the attainment of standards, and the amount of each toxic pollutant discharged by each such source.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句