discharge into the environment meaning in English

排入大气中；排入环境中
排入水中；排入环境中

The related reports said the main pollution sources of serious environmental cd , pb and as pollution in china were mining and smelting of nonferrous metals , these pollutants were discharged into the environment and caused the pollution of water , atmosphere , soil and biological species and caused a series of acute and chronic diseases in the exposed people , but the relationship between malignant tumors and environmental cadmium , lead , arsenic pollution is not well understood up to now
研究认为有色金属镉、铅、砷对人体有毒害作用；有色金属矿山的开采和冶炼是环境镉、铅、砷污染的主要来源；污染物进入环境后，产生水污染、大气污染、土壤污染和生物污染，继而危害暴露人群的身体健康，产生一系列急性和慢性病症。