名词
中文翻译：拱形结构
同义词：
['architectural block', 'arched block例句：1. The architect designed the building with a unique arch block.（这位建筑师设计了一座独特的拱形建筑。）']
例句：
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1. The architect designed the building with a unique arch block.
这位建筑师设计了一座独特的拱形建筑。
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2. The arch block is a symbol of the ancient city's architectural style.
这个拱形结构是古老城市建筑风格的代表。
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3. The arch block is used to support the weight of the roof and prevent it from collapsing.
这个拱形结构用来支撑屋顶的重量，防止其坍塌。