dog in the manger
自己不想要或者不需要，但是也不供給別人使用的東西
口語(yǔ)·諷刺自私占有
英文釋義
someone who selfishly prevents others from using or enjoying something that they themselves have no use for
例句
He won't use the tools but won't let others borrow them—such a dog in the manger.
典故來(lái)源
源自伊索寓言：狗躺在馬槽里，自己不吃干草，卻阻止馬吃。