相关单词同義詞semidiameter, 近義詞 circle 圓圈, breadth 寬度, line 線, distance 距離, length 長度, area 麪積, range 範圍, ambit （權勢等的）範圍..., extent 廣度, bounds 界限, scope 機會area of influence, 影響區域, 影響麪積..., umbrella 繖, reach 到達, sweep 打掃, remit 滙出, r 字母r, spoke 輪輻, wheel spoke 輪輻臨近詞radix, radium, Radiusi, radiused, radiusing, radius bar, radius die, radius tap, radiuscope, radius arm, radius rod, radius tip相似詞radiotherapy, radioulnar, radish, radium, radix, Radnorshire, radon, Rafferty's rules, 返回 radius