sooner or later 迟早；早晚；迟早会的；或迟或早；迟早有一天

【例句】
It was bound to happen sooner or later.
这事迟早都是要发生的。

Keep applying and by the law of averages you'll get a job sooner or later.
继续申请吧，根据平均律你迟早会找到工作的。