asphalt saturated felt

例句：

1. 1. The road was covered in a thick layer of asphalt.
   路面上铺满了一层厚厚的沥青。
2. 2.The construction crew used asphalt to pave the streets.
   建筑工人使用沥青来铺设街道。
3. 3.Asphalt is commonly used for road surfaces due to its durability and low maintenance costs.
   由于其耐用性和低维护成本，沥青常被用于道路表面。