be made of

例句：

1. 1. The building is made of steel and glass.
   这座建筑是用钢和玻璃建造的。
2. 2. The car is made of aluminum and plastic.
   这辆车是用铝和塑料制成的。
3. 3. The soup is made of vegetables and meat.
   这汤是用蔬菜和肉做成的。