a matter of time
成語所屬單字matter
a matter of time — 慣用語
1. used to say that something is certain to happen at some point in the future, tho
1.慣用語
釋義
時間問題；遲早的事
used to say that something is certain to happen at some point in the future, though the exact moment is unknown
例句
With her talent and hard work, becoming a famous singer is only a matter of time.
The police knew it was just a matter of time before the thief made another mistake.