the process of removing dirt, pollution, or things that are considered bad or offensive from a place 清扫；清除（污染物）；清理；整顿 the clean-up of the river 河流清理 a clean-up campaign 整顿运动 a massive clean-up operation 大扫除行动
Oxford Collocations DictionaryClean-up is used before these nouns:- crew
- effort
- operation
- …