roof/ruf; ruːf/n [C]1 the part of a building or vehicle that covers the top of it 顶部﹔屋顶﹔车顶: He installed a satellite dish on the roof. 他在屋顶上装了一个碟形卫星天线。+of She had to jump from the roof of the building to escape. 她只得从屋顶上跳下来逃生。flat/sloping/pitched roof 平顶/斜顶2 the top of a PASSAGE under the ground〔地下通道的〕顶: The roof of the tunnel suddenly collapsed. 隧道的顶部突然坍塌了。3 the roof of your mouth the top part of the inside of your mouth 上腭4 a roof over your head somewhere to live 住处﹐栖身之所: I may not have a job, but at least I’ve got a roof over my head. 我是没有工作﹐但我至少还有个栖身之地。5 hit the roof/go through the roof spoken informal to become very angry 【口, 非正式】勃然大怒: My wife is going to hit the roof when she finds out. 我老婆知道了会大发雷霆的。6 under one roof/under the same roof in the same building or house 在同一屋檐下: If we’re going to live under the same roof , we need to get along. 我们要想住在同一个屋檐下﹐就得好好相处。