radius 常用詞匯
英 ['re?di?s] 美 ['re?di?s]
n. 半徑範圍；半徑；橈骨；輻射區
Nobody is allowed to enter the operation radius.
不允許任何人進入工作半徑範圍以內。
What is the radius of this circle?
這個圓的半徑有多長?
We can compute the circular area with radius.
我們能用半徑計算出圓的面積。
The radius expands markedly at its lower end.
橈骨下端明顯擴張。
The police searched all the woods within a six-mile radius.
警察搜索了在周圍六英裏以內的樹林各處。