So far,China has designated 34 dumping areas for dredged materials of the third category and four areas for midair oil discharge. It has issued about 2,000 dumping permits and tightened up the monitoring of the environmental quality of dumping areas.是什么意思_So far,China has designated 34 dumping areas for dredged materials of the third category and four areas for midair oil discharge. It has issued about 2,000 dumping permits and tightened up the monitoring of the environmental quality of dumping areas.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句