[idiom, mainly disapproving] to appear after having been hidden or not active for a long time
[习语，主要用作贬义]（长期隐藏或沉寂后）公开露面，活跃起来

例句：

After you’ve been in a relationship for a while all sorts of little secrets start to come out of the woodwork. 在你谈了一段恋爱之后，各种各样的小秘密就都冒了出来。