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来源:雅诚德英语网
This strange characteristic of concrete made a significant contribution to the success of the Roman Empire.
混凝土的这种奇特特性为罗马帝国的成功作出了重大贡献。
This strange characteristic of concrete made a significant contribution to the success of the Roman Empire.
混凝土的这种奇特特性为罗马帝国的成功作出了重大贡献。