hear it on the grapevine
"从传言中听到" (从他人的传闻中得知某事情)
口语·表示传闻消息
英文释义
to learn or receive information from unofficial or informal sources
例句
I heard it on the grapevine that they're getting married.
典故来源
源自19世纪美国电报线像葡萄藤般交织，暗示信息通过非正式渠道传播。