名词
中文翻译：适当的圈
同义词：
['proper square', 'proper shape']
例句：
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1.The circle of friends we have is very important to us.
我们拥有的朋友圈对我们来说非常重要。
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2. The circle of light around the sun is called the solar system.
围绕太阳的光环被称为太阳系。
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3. The circle of stars in the night sky is a beautiful sight.
夜空中星星组成的圆圈是一幅美丽的景色。