名词
中文翻译：正常圆
同义词：
['normal circle', 'standard circle', 'regular circle']
例句：
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1.This is a normal circle of light from the sun.
这是来自太阳的正常光圈。
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2.The normal circle of the earth's magnetic field is about 360 degrees.
地球磁场的正常圆周大约是360度。
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3.The normal circle of the earth's magnetic field is about 360 degrees.
地球磁场的正常圆周大约是360度。