concrete

/ˈkɑnkrit/

a strong hard building material composed of sand and gravel and cement and water

中文释义：混凝土

The bridge is made of reinforced concrete, which ensures its durability.

这座桥由钢筋混凝土建成，确保了其耐久性。

Workers poured concrete into the molds to form the foundation of the building.

工人们将混凝土倒入模具中，形成建筑物的地基。