pick up/take the ball and run with it idiom
（尤指在他人不能完成时）接手做某事
to continue an activity or process that someone else has started, often when that person could not finish it or make it work
We had a very vague idea of what we wanted, but the marketing team just took the ball and ran with it. 我们尚不清楚他们想要什么，营销团队就接过手去开始忙活了。