Water pollution is mainly caused by the chemicals discharged by the factories. We should regulate the sewage discharge standard to minimize the impact of human activity on the environment. 工厂排放的化学品是造成水污染的主要原因,我们应当调节污水排放标准来减少人类活动对自然地影响. ps 我保证英文没有中文看起来这么蹩脚,我实在翻译不出感觉.如果不满意,你还不如直接写中文,我帮你翻译成英文.
