smarten(sb/sth)up
—phrasal verbwithsmartenverbuk/ˈsmɑː.tən/us/ˈsmɑːr.tən/
mainlyUKto (causeto)becomemoreclean,tidy, andstylish
（使）变得整洁入时，（使）变得时髦
She's really smartened herselfup since shefinishedcollege.她大学毕业后确实更会打扮了。
You'll have to smarten up if youwanttoworkintelevision.如果你想在电视行业工作，就必须将自己打扮得漂漂亮亮的。