circumference [sərˈkʌmfərəns]

例句:

• the circumference of the earth
  地球的周长
  
• It's a mile round the circumference of the field.
  运动场周长一英里.
  
• The diameter and the circumference of a circle correlate.
  圆的直径与圆周有相互关系.
  
• Thus the distance is linear on the circumference.
  来自SA
• Finally, there are several iron rings of increasing circumference.
  来自NEWYORKER
• The circumference of a circle is determined by Diameter X Pi.
  来自SA