to reduce levels of environmental pollution
降低环境污染的程度
英语解释：the process of making air, water, soil, etc. dirty; the state of being dirty 污染；玷污；弄脏:
注：一词有多义，单词一次只记一种意思即可。
,
to reduce levels of environmental pollution
降低环境污染的程度
英语解释：the process of making air, water, soil, etc. dirty; the state of being dirty 污染；玷污；弄脏:
注：一词有多义，单词一次只记一种意思即可。
,
