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English definition of “clean sth up”

clean sth up

phrasal verb with clean
 
 
/kliːn/ verb
informal to stop illegal and dishonest activity in a company, system, etc.: Last week the Government announced plans to clean up the mortgage industry. After the scandal, a team of marketing specialists was hired to clean up the company's image.
ENVIRONMENT to remove harmful substances or chemicals from a place or the environment: clean up pollution/contamination/waste $250 million was spent on cleaning up groundwater contamination at the former factory's site.
(Definition of clean sth up from the Cambridge Business English Dictionary © Cambridge University Press)
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