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。
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。
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。
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。
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 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。
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