rifled sheet iron

例句：

1. 1.The car was rifled with bullet holes after the accident.
   事故发生后，这辆车被子弹打成了筛子。
2. 2. The construction workers used a rifled sheet iron to reinforce the wall.
   建筑工人使用一个擦伤的钢板加固了墙壁。
3. 3.The rifled sheet iron is used as a protective layer on the surface of the building.
   擦伤的钢板用作建筑物表面的保护层。