a white elephant
成語所屬單字elephants
a white elephant — 慣用語
1. something costly to own or maintain that has very little real use or value
1.慣用語
釋義
白象（指昂貴卻無用、難以維護的事物）
something costly to own or maintain that has very little real use or value
例句
The empty shopping centre on the edge of town has become a white elephant.
Saira's uncle bought a large boat that turned out to be a white elephant — it broke down every summer.