名词
中文翻译：环状的
同义词：
['circular', 'cylindrical', 'conical']
例句：
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1. The hypocycloidal shape of the planet is fascinating to study.
行星的圆周形状令人着迷。
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2. The architect designed a hypocycloidal spiral staircase.
建筑师设计了一个圆周螺旋楼梯。
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3. The hypocycloidal pattern on the wall was created by hand.
墙上的圆周图案是手工绘制的。