straight from the horse's mouth
口語·強調信息可靠
例句
I heard it straight from the horse's mouth—the boss said we're getting a bonus this year.
典故來源
源自賽馬領域,賽馬愛好者通過觀察馬嘴判斷馬齡和健康狀況,因此從馬主或騎師處直接獲得的信息最可靠。