on the case
全力以赴、專心致志、盡職盡責
口語·表示正在積極處理某事
英文釋義
actively investigating or working on a situation or problem
例句
Don't worry about the leak; the plumber is already on the case.
典故來源
源自偵探或警察工作,指負責調查案件,后泛指積極處理問題。