You use concrete to indicate that something is definite and specific.
明确具体的 • I had no concrete evidence. 我当时没有明确而具体的证据。
The posts have to be set in concrete.
这些柱子必须固定在混凝土中。
When you concrete something such as a path, you cover it with concrete.
给 (道路等) 浇混凝土 • He merely cleared and concreted the floors. 他只是清理了地板并浇上了混凝土。
| n.混凝土 |
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|---|---|
| adj. 实在的,具体的 |
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