rigid composite material

例句：

1. 1. The material is rigid enough to withstand heavy loads.
   这种材料足够坚硬，能够承受重载。
2. 2. The chair was made of rigid plastic.
   椅子是用硬质塑料制成的。
3. 3. The road is too rigid for cars to drive on it.
   这条路太硬了，不适合汽车行驶。