名词
中文翻译：圆环
同义词：
['ring', 'circle', 'ring-shaped object']
例句：
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1. TheCygon is a fascinating shape that canbe found in many natural environments.
Cygon是一种迷人的形状，可以在许多自然环境中找到。
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2.The Cygon is often used as asymbol of protection and safety.
Cygon通常用作保护和安全的符号。
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3. TheCygon is made upof two concentric circles,with each circle having a diameter of10 cm.
Cygon由两个同心圆组成，每个圆的直径为10厘米。