Nick has searched for work in a ten-mile radius around his home.
尼克已经在以家为中心10英里的范围内寻找工作。
He indicated a semicircle with a radius of about thirty miles.
他标示出一个半径大约三十英里的半圆。
The radiation radius of the radioactive radium radiator in the stadium is variable.
放射性的镭散热器在体育场的辐射半径是可变的。