subcovering

例句：

1. 1. The roof of the house is covered with tiles.
   房子的屋顶被瓷砖覆盖。
2. 2. The new car has an awning as a subcovering.
   新车有一个遮阳篷作为遮盖物。
3. 3.The tent was used as a temporary subcovering during the rainstorm.
   帐篷在暴风雨期间用作临时遮盖物。