radius

1. N-SING The radius around a particular point is the distance from it in any direction. 范圍

Nick has searched for work in a ten-mile radius around his home. 尼克已經(jīng)在以家為中心10英里的范圍內(nèi)尋找工作。

2. N-COUNT The radius of a circle is the distance from its centre to its outside edge. 半徑

He indicated a semicircle with a radius of about thirty miles. 他標(biāo)示出一個(gè)半徑大約三十英里的半圓。