Elephant in the room
房间里的大象，指一个紧迫但敏感的问题，大家因尴尬或顾虑而避而不谈。
描述社交或工作场合中回避敏感话题时使用。
英文释义
An pressing issue left unaddressed due to its sensitive nature.
例句
The budget crisis was the elephant in the room during the board meeting.
典故来源
源自20世纪英语谚语，用大象的巨大体积比喻显而易见却被忽视的问题。