clean ·phrasal verb (REMOVE POLLUTION)
Definition: to remove pollution from somewhere Level: C1
他们正在开发清理污染河流的工艺。
They are developing processes to ___clean ___up polluted rivers.
我也可以通过分发传单来帮助，传单上包含如何开始清理环境的信息。
I can also help by distributing leaflets which contain information on how to start ___cleaning ___up the environment.
政府计划清理工业废料场。
The government plans to ___clean ___up the industrial waste sites.