"old hat" in Chinese (Simplified)
老套老生常谈
Definition
因太常见而已不新鲜、无趣、没有新意的事情。
Usage Notes (Chinese (Simplified))
这是一个口语表达，含有贬义，用于形容已经不新鲜、缺乏新意的想法或做法。并不用于真正的帽子。常用于对潮流、观点、消息等的评论。
Examples
That movie is old hat now; everyone has seen it.
那部电影现在已经**老套**了，大家都看过。
His jokes are old hat to us.
他的笑话对我们来说已经**老生常谈**了。
Learning the alphabet is old hat for kids in this class.
学字母对这个班的孩子来说已经是**老套**了。
Don't bring up that topic again—it's old hat.
别再提那个话题了——已经**老套**了。
For tech experts, these security tips are old hat.
对技术专家来说，这些安全提示已经是**老套**了。
Back in the day, that style was cool, but now it's just old hat.
那种风格以前很酷，但现在只是**老套**了。