词典释义：
existing in a material or physical form; real or solid; not abstract
具体存在的；实在的；有形的
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concrete objects like stones 像石头这样的实物
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it exists as a physically concrete form. 它以具体物质形式存在。
specific; definite
具体的；明确的；确定的；确实的
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I haven't got any concrete proof. 我没有任何确实的证据。
(of a noun)denoting a material object as opposed to an abstract quality, state, or action
（名词）具体的；物质的。
[mass noun]a heavy, rough building material made from a mixture of broken stone or gravel, sand, cement, and water, which can be spread or poured into moulds and forms a stone-like mass on hardening
混凝土
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slabs of concrete 混凝土板
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[as modifier]
concrete blocks. 混凝土块。
cover (an area) with concrete
铺（或浇）以混凝土，用混凝土铺筑
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the precious English countryside may soon be concreted over .人们所珍爱的英国乡村可能快要被混凝土覆盖了。
[with obj. and adverbial of place]fix in position with concrete
用混凝土固定
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the post is concreted into the ground. 柱子是用混凝土浇注埋入地里的。
〈古〉 （使）固结；（使）凝固，（使）凝结
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the juices of the plants are concreted upon the surface. 植物的汁液在其表面凝固了。
make real or concrete instead of abstract
使真实（化）；使具体（化）
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concreting God into actual form of man. 把上帝真实化，使其具有人本身的形象。
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be set in concrete （of a policy or idea） be fixed and unalterable （政策，思想观念）固定不变的，确定的；不可变更的I do not regard the constitution as set in concrete. 我不认为宪法是不可变更的 -
in the concrete formal in reality or in practice 〈正式〉 具体地；实际上，事实上
"late Middle English （in the sense ‘formed by cohesion, solidified’）： from French
