污染有害于人类。在正文部分分析了污染会给人类造成哪些具体的危害。最后在结尾部分提出了防治污染的措施。

Measures should be taken to control pollution. Legislative steps should be introduced and pollutants should be trapped before they are poured out of chimneys.

youdao

污染有害于人类。在正文部分分析了污染会给人类造成哪些具体的危害。最后在结尾部分提出了防治污染的措施。

Measures should be taken to control pollution. Legislative steps should be introduced and pollutants should be trapped before they are poured out of chimneys.

youdao