名词
中文翻译：拱形结构
同义词：
['arch', 'vault', 'dome']
例句：
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1.The ancient city has a unique fluing arch in its center.
这个古老的城市中心有一个独特的拱形结构。
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2. The dome of the cathedral is visible from far away.
大教堂的圆顶从远处就能看到。
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3. The architect designed the building with a fluing arch at the entrance.
建筑师设计了这座建筑，入口有一个拱形结构。