... 圆周闭合曲线图形的周边 circumference 周边视觉 周围视觉 间接视 peripheralvision 圆周 circle; periphery; circumference 圆周上的一点 a point on the circumference; 地球的圆周约为25,000 英里。 the earth's circumference is nearly 25,000 miles.; 圆周规 circumference gauge; 圆周角 angle of circumference; angle in a circular segment; circumferential angle; 圆周率(π) ratio of the circumference of a circle to its diameter; pi; 圆周运动 circular motion; circling motion; round ...
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