Concrete is a mixture of sand and cement.
混凝土是沙和水泥的混合物。
Concrete is made of cement, sand, stones, and water.
混凝土是用水泥、沙、石子和水制成的。
They mix sand and cement to make concrete.
他们把沙子和水泥混合制成混凝土。
The workmen mixed sand, gravel, and cement to make concrete.
工人们把沙，石子和水泥混和成混凝土。
Sand should be screened before you mix it with concrete.
与混凝土混合前，沙子该筛一筛。
Concrete is composed of cement, sand and gravel mixed with water.
混凝土由水泥、砂、石子与水掺和而构成。
Concrete is made of cement, sand, stone and water.
混凝土是由水泥，砂子，石头和水混合而成。
Concrete consists of cement, sand and gravel, mixed with water. .
混凝土是水泥、沙子和碎石加水构成的。
Concrete is made of cement, sand, and gravel mixed with water.
混凝土是由水泥、沙子和碎石并和水混合而成的。
P92 Concrete is a mixture of water, sand and gravel, and Portland cement.
混凝土是由水、沙和砾石、波特兰水泥拌合而成。
Volleyball court. Use for concrete, grass, or sand court.
排球场。使用混凝土、草地或沙地球场。
Fly ash can be used to make cement concrete. It can save cement and sand.
粉煤灰可用于水泥混凝土的制备，可节约水泥和砂。
Cement, water and sand are mixed to make concrete.
水泥，水，和沙搅在一起便是混凝土。
Concrete is made of cement, sand, stones and water.
混凝土是用水泥、沙石和水制成的。
Let's mix concrete, sand and stones.
把水泥、沙子和石子掺合在一起。
Use for concrete, grass, or sand court.
使用混凝土、草地或沙地球场。
Use for concrete, grass, or sand court.
使用混凝土、草地或沙地球场。
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