GbEng
我们能用半径计算出圆的面积。 We can compute the circular area with radius.
警察搜查了半径两英里范围内所有的田野和森林。 The police searched all the fields and woods within a radius of two miles.
住在离城中心半径25英里的范围内的家庭 Every family within a radius of25 miles of the city center.
(曲轴的)半径曲柄、凸轮或类似机器部件形成的圆的半径 The radius of a circle described by a crank, cam, or similar machine part.