hear on the grapevine
通过非正式渠道、传闻或谣言听到一件事情
口语·非正式渠道得知
英文释义
to hear rumors or information indirectly or through gossip
例句
I heard on the grapevine that you're leaving the company.
典故来源
与“hear it on the grapevine”同源，强调通过小道消息获知。