形容词
中文翻译：循环的
同义词：
['round', 'circular', 'roundabout']
例句：
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1.The circle of light cast by the moon is beautiful.
月亮投下的光环很美丽。
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2.The car was parked in a circular pattern around the square.
汽车停在广场周围成圆形排列。
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3.The circumference of the circle is 2πr.
圆的周长是2πr。