concrete /ˈkɒnkriːt/ CET4 TEM4 ( concreting, concreted, concretes )

• 1. 

  N-UNCOUNT Concrete is a substance used for building which is made by mixing together cement, sand, small stones, and water. 混凝土

  例：

  The posts have to be set in concrete.

  这些柱子必须固定在混凝土中。

  例：

  We sat on the concrete floor.

  我们坐在混凝土地板上。

• 2. 

  V-T When you concrete something such as a path, you cover it with concrete. 给 (道路等) 浇混凝土

  例：

  He merely cleared and concreted the floors.

  他只是清理了地板并浇上了混凝土。

• 3. 

  ADJ You use concrete to indicate that something is definite and specific. 明确具体的

  例：

  I had no concrete evidence.

  我当时没有明确而具体的证据。

  例：

  There were no concrete proposals on the table.

  没有提交讨论的具体提议。

• 4. 

  ADJ A concrete object is a real, physical object. 实物的

  例：

  ...using concrete objects to teach addition and subtraction.

  …用实物教加减运算。

• 5. 

  ADJ A concrete noun is a noun that refers to a physical object rather than to a quality or idea. 具体的 (名词) [ADJ n]