楼中楼

lóu zhōng lóuㄌㄡˊ ㄓㄨㄥˉ ㄌㄡˊ

英文直译building within a building按字面理解

针对某条回复继续展开的小讨论

英文翻译A nested reply that continues a discussion under an existing comment or reply, forming a smaller sub-thread within the original thread.

例句

这条帖子下面已经盖了几十层楼中楼，大家还在争论该不该给宠物穿衣服。