circumference of a circle [数] 圆周 ; 圆的周长
the circumference of the circle 圆的周长
circle circumference
圈周长
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It's as a philosopher once imagined: a circle of which the center is everywhere and the circumference is nowhere.
FORBES: Wireless Everywhere
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