a.

1. 有形的，实在的；具象的；具体的
   The word "apple" is a concrete noun.

   “苹果”是个具体名词。

   Shoes and trees are concrete objects.

   鞋和树是实物。

2. 具体的
   His plan is not yet concrete.

   他的计划尚不具体。

   Have you got any concrete proposals?

   你有没有具体的建议呢？

3. 混凝土的

n.[U]

1. 具体物
2. 混凝土；凝结物
   These buildings are made of concrete and steel.

   这些房屋是用钢和混凝土建成的。

vt.

1. 使凝固；使结合
2. 用混凝土修筑；浇混凝土于
   The workmen are concreting the road.

   工人们在用混凝土铺路。

vi.

1. 凝结，固结

adj.

n.

v.

1. /ˈkɒŋkriːt/ cover or fix solidly with concrete.
2. /kənˈkriːt/ archaic solidify.
   ▸make real.