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| 水泥 (一种干燥的粉末，从硅石、氧化铝、石灰、铁矿石、氧化镁制得，当和水混合时会变硬，用作混凝土的组成部分。) | |||
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cementar : 3 phrases in 1 subject |
| Environment | 3 |
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