If leak accidents once occur in chemical plants, a great lot of noxiouschemical will be discharged to the environment, and it causes serious environmental pollution.
化工厂一旦发生突发泄漏事故，往往会使有毒化学品大量外泄，造成严重的的环境污染。
2
Rapidly expanding industries which involve more and more complex chemical processes will produce large volumes of liquid wastes, and many of these will contain chemicals which are noxious.