Definition: a very hard building material made by mixing together cement, sand, small stones and water Level: B2
这座桥是用钢筋混凝土建造的。
The bridge was built using reinforced ___concrete.
我们决定用混凝土露台替换木制平台。
We decided to replace the wooden deck with a ___concrete patio.
许多现代城市中心遍布着高耸的混凝土建筑。
Many modern city centres are full of towering ___concrete structures.
