圆周

yuán zhōu bàn jìng

圆周半径

circumferential radius

huà yuán zhōu

画圆周

draw a circle

yuán zhōu cháng dù mǐ

圆周长度3米

be of three metres in circumference

yuán zhōu shang de yī gè diǎn

圆周上的一个点

a point on the circumference

dì qiú de yuán zhōu yuē wéi yīng lǐ

地球的圆周约为25000英里。

The earth's circumference is about 25,000 miles.