?做靠山

... 作某人后盾 at somebody's back 做靠山 做后盾 be the shield and buckler 后盾与保障 Backing and ensuring ...

?做后盾

be the shield and buckler 做靠山, 做后盾, 做可靠的保护者 both sides of the shield 盾的正反两面 事物的表里 the other side of the shield 盾的反面; 问题的另一面...