come up up trumps

Từ điển Oxford Advanced Learner 8th

ˌcome up/ˌturn up ˈtrumps idiom
to do what is necessary to make a particular situation successful, especially when this is sudden or unexpected
•I didn't honestly think he'd pass the exam but he came up trumps on the day.
•Just when we thought there was no hope, my parents turned up trumps with a large loan.
Main entry: ↑trump_idiom