step up to the mark
勇于承担责任并展示自己的能力
正式或口语·表扬应对挑战
英文释义
to rise to the challenge or meet the expected standard
例句
The team was struggling, but she really stepped up to the mark and turned things around.
典故来源
源自射击或体育比赛中的起跑线（mark），指选手就位准备应对挑战，后引申为达到标准或挺身而出。