concrete/'kɒŋkriːt $ 'kɑːn-/

a. based on facts, not on ideas or guesses

n. a substance used for building that is made by mixing cement, sand, water and small stones

a. 具体的，确凿的：They had no concrete evidence. 他们没有确凿的证据。

◇concrete information 具体的信息

n. [U] 混凝土：When the concrete was completely dry, the wooden molds were removed. 混凝土完全干后，木头模板就拆了。

◇a concrete floor 混凝土地面

构词con (= com-) + crete (= grow)

同根 increase