名词
中文翻译：皇冠杆
同义词：
['crown', 'shaft', 'spire']
例句：
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1.The crownshaft of the tree is a symbol of strength and beauty.
这棵树的冠状杆是力量和美丽的象征。
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2.The crownshaft of the building is made of marble.
这座建筑的冠状杆由大理石制成。
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3. The crownshaft was used to support the roof.
冠状杆用于支撑屋顶。