circumference

circumference

[sə'kʌmfərəns]

n.圆周, 周围, 周长

例句与用法：

The curve traced by a point on the circumference of a circle that rolls on a straight line.

圆滚线，摆线圆周上任一点在一条直线上滚动时所形成的曲线

The distance around something; the circumference.

周围，四周围绕某物的距离; 周围

The circumference of the earth is almost 25,000 miles.

地球的圆周长约为两万五千英里。

词形变化：

形容词: circumferential |

---

n.

1. 圆周; 周长[C][U]

This tree has a circumference of 6 feet.

这棵树周长六英尺。

2. 物体(或图形)的周边[the S][(+of)]