behind the times
01
跟不上时代, 落伍
(of a person) not keeping up with current trends, ideas, or advancements
贬义
习语
例子
He is behind the times when it comes to technology.
在技术方面，他跟不上时代。
02
(of a thing) outdated or no longer relevant to current trends or technology
习语
非正式
例子
That payment system is behind the times and frustrates customers.
