用作名词：混凝土 building material that is made by mixing together cement , sand, small stones and water
用作动词：用混凝土覆盖 to cover sth with concrete
cement：
用作名词：水泥 a grey powder made by burning clay and lime that sets hard when it is mixed with water. Cement is used in building to stick bricks together and to make very hard surfaces
胶合剂；胶接剂；黏固剂 a soft substance that becomes hard when dry and is used for
sticking things together or filling in holes
共同利益联合起来的纽带，凝聚力
something that unites people in a common interest
用作动词：用水泥、胶等粘结，胶合 to join two things together using cement , glue, etc
加强，巩固（关系等） to make a relationship, an agreement, etc. stronger
4、英语释义
concrete：
① a strong hard building material composed of sand and gravel and cement and water
一种坚硬的建筑材料，由砂、砾石、水泥和水组成。
② form into a solid mass 形成固体
③ capable of being perceived by the senses 能够被感觉到的
④ formed by the coalescence of particles 由微粒聚结形成
cement：
① a specialized bony substance covering the root of a tooth
覆盖牙齿根部的一种特殊的骨质物质。
② something that hardens to act as adhesive material
变硬的东西，起粘合材料的作用
③a building material that is a powder made of a mixture of calcined limestone and clay
520贝基清净果
