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来源:雅诚德英语网
One of the most important facts about concrete for the Romans was that it can be created underwater.
对于罗马人来说,混凝土最重要的事实之一就是它可以在水下建造。
One of the most important facts about concrete for the Romans was that it can be created underwater.
对于罗马人来说,混凝土最重要的事实之一就是它可以在水下建造。