早期的观察结果具有一定的代表性，但样本空间较小。

Early observations were assumed to be representative, but were based on small samples.

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这个代表性的建筑建于公元70 ~ 82年，用拱桥来显得蔚为壮观——这是罗马的建筑发明，它的美在于不仅扩大了空间，而且让建筑变得更加稳固。

This iconic structure, built in Rome between 70 and 82ad, made spectacular use of the arch - a Roman architectural invention that has the beauty of opening up space but also being very stable.

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第三层，主立面设计，为了保证建筑外观立面的连续性，中空空间采用最具代表性的元素。

And on the third level, on the main facade, forming the most representative elements as hollow in the continuity of the facade plane.

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