/ˈkɒŋkriːt/1
- existing in a material or physical form; real or solid; not abstract具体存在的; 实在的; 有形的：
concrete objects like stones
像石头这样的实物
it exists as a physically concrete form.
它以具体物质形式存在。
1.1
- specific; definite具体的; 明确的; 确定的; 确实的：
I haven't got any concrete proof.
我没有任何确实的证据。
1.2
- (of a noun) denoting a material object as opposed to an abstract quality, state, or action（名词）具体的; 物质的。
/ˈkɒnkriːt/
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：
slabs of concrete
混凝土板
as modifier concrete blocks.混凝土块。
with obj. (常作be concreted)
1
1.1
- /ˈkɒŋkriːt/cover (an area) with concrete铺（或浇）以混凝土, 用混凝土铺筑：
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。
1.2
- with obj. and adverbial of place fix in position with concrete用混凝土固定：
the post is concreted into the ground.
柱子是用混凝土浇注埋入地里的。
2
- /kənˈkriːt/ archaic form (something) into a mass; solidify〈古〉（使）固结; （使）凝固, （使）凝结：
the juices of the plants are concreted upon the surface.
植物的汁液在其表面凝固了。
2.1
- make real or concrete instead of abstract使真实（化）; 使具体（化）：
concreting God into actual form of man.
把上帝真实化, 使其具有人本身的形象。
短语
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。
派生词
concretely
adverbconcreteness
noun词源
late Middle English （in the sense 'formed by cohesion， solidified'）： from French concret or Latin concretus, past participle of concrescere 'grow together'. Early use was also as a grammatical term designating a quality belonging to a substance （usually expressed by an adjective such as white in white paper） as opposed to the quality itself （expressed by an abstract noun such as whiteness）; later concrete came to be used to refer to nouns embodying attributes （e.g. fool， hero）， as opposed to the attributes themselves （e.g. foolishness， heroism）， and this is the basis of the modern use as the opposite of 'abstract'. The noun sense 'building material' dates from the mid 19th cent.