composite commodity standard

例句：

1. 1.The engineer designed a composite material that isstronger than steel.
   这位工程师设计了一种比钢更坚固的复合材料。
2. 2. Theconstruction of the bridge wasmade from composite materials to reduceweight and increase durability.
   这座桥梁的建设使用了复合材料，以减轻重量并提高耐用性。
3. 3. The scientist discovered a new typeof composite material that could be used inspace exploration.
   这位科学家发现了一种可用于太空探索的新型复合材料。