The beams are usually made from steel or concrete.横梁一般由钢铁或混凝土制成。

The posts have to be set in concrete.柱子必须用混凝土固定。

You can sit on the concrete by the pool.你可以坐在游泳池边的混凝土地上。

a disconcerting mixture of the fantastical and the concrete异想天开的事物和实实在在的事物之间令人困惑的混合

They had lain on sleeping bags on the concrete floor.他们一度躺在铺在混凝土地面的睡袋上。

concrete barriers混凝土屏障

He had no concrete evidence.他没有确凿的证据。

There were no concrete proposals on the table.没有具体的建议提交讨论。

Let me give you a concrete example.让我给你一个具体的例子。

Sometimes solutions are found by representing the problem using concrete objects.有时通过使用实物表现问题找到了解决方法。

using concrete objects to teach addition and subtraction用实物来教加减法

He merely cleared and concreted the floors.他只是把地面清理之后浇上了混凝土。

Downstairs, the builders have dug and concreted the foundations of a new supporting wall.楼下, 建筑工人们已经挖开并用混凝土浇筑了一面新支承墙的地基。