"radius" in Chinese (Simplified)
半径桡骨
Definition
从圆心到圆边的直线段。也可以指前臂的两块主要骨头之一。
Usage Notes (Chinese (Simplified))
在数学和几何中，通常指从圆心到圆边的距离，“直径”是从边到边。解剖学上，“radius”指拇指一侧的前臂骨头。不要和“直径”混淆。
Examples
The radius of this circle is 5 centimeters.
这个圆的**半径**是5厘米。
My teacher explained what the radius means in geometry class.
老师在几何课上解释了**半径**是什么意思。
She broke her radius while skating last year.
她去年滑冰时摔断了**桡骨**。
You can find the area of a circle if you know its radius.
如果你知道圆的**半径**，就能算出它的面积。
The store delivers within a five-mile radius.
商店在五英里**半径**范围内送货。
Doctors checked the X-ray for any damage to the radius after her fall.
医生在X光片中检查她摔倒后**桡骨**是否受损。