perforated metal

例句：

1. 1. The old house was made of perforated metal.
   这所旧房子是用穿孔金属建造的。
2. 2. The fence is made of perforated metal to keep the animals in.
   这道围栏是用穿孔金属做的，用来把动物关在里面。
3. 3.The roof of the car is made of perforated metal to protect it from the rain.
   汽车的屋顶是用穿孔金属做的，用来保护它不受雨水的侵蚀。