周三径一

zhōu sān jìng yī

정의

1. circumference of a circle is proverbially three times its radius

周三径一의 구성 단어

• 一 yī: one
• 三 sān: three
• 周 zhōu: to make a circuit
• 径 jìng: footpath
• 周三 zhōu sān: Wednesday