n. a protective covering that covers or forms the top of a building
n. protective covering on top of a motor vehicle
n. the inner top surface of a covered area or hollow space
v. provide a building with a roof; cover a building with a roof
n. 屋顶, 室顶
vt. 给...盖屋顶, 遮蔽
1. The cat is sitting on the roof.
猫正在屋顶上坐着。
2. We need to fix the leak in the roof before it rains.
我们需要在下雨之前修理屋顶的漏水。
3. They climbed up to the roof to watch the fireworks.
他们爬到屋顶上观看烟花。