1·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。
—— 《柯林斯英汉双解大词典》
2·Simply change the radius to 2000, and you should start to see some results.
只需将半径更改为2000，您应当便会看到一些结果，当然。
3·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。
4·In their model, the radius is the distance from the center of the animal to its skin.
在他们的模型中，半径是动物中心到其皮肤的距离。
5·To translate this formula into an expression, you would use variables to record the radius and circumference.
要将这个公式转换为一个表达式，你需要使用变量来记录半径及周长。