roof flashing

例句：

1. 1. The new house has a beautiful roof flashing that keeps the rain out.
   这座新房子有漂亮的屋顶防水层，可以挡住雨水。
2. 2. The roof flashing was installed to prevent water damage in the attic.
   安装屋顶防水层是为了防止阁楼的漏水。
3. 3. The contractor replaced the old roof flashing with a more durable material.
   承包商用更耐用的材料替换了旧的屋顶防水层。