名词
中文翻译：Unknown
同义词：
['混凝土，水泥混凝土，混凝土混合物']
例句：
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1. The construction crew mixed the concrete for the foundation of the new building.
建筑工人为新大楼的基础混合混凝土。
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2. The engineer used a concrete mix to reinforce the weak section of the bridge.
工程师使用混凝土混合物加固桥梁的薄弱部分。
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3. The concrete mix was poured into the mold and allowed to cure for several days before it could be taken out ofthe mold.
混凝土混合物被倒入模具中，在固化几天后才能脱模。