R 开头单词
running-water community [生物學]流水群集
running-track n.跑道
running-shoes n.跑鞋
running-out period [土木建築工程]運行結束期
running-out n.慣性運動
running-on 套羅口
running-mate 競選夥伴
running-light 空載運行
running-in period [機][車輛] 磨郃期 跑郃期 走郃期
running-in n. [機][車輛] 磨郃（等於breaking-in，wearing-in）；試運轉；慎行；配研
running-idle 空轉
running-hand calligraghy style [藝術學]行草書風
running-down of business [經濟學]縮減業務
running-down clause [交通運輸工程]船舶碰撞條款
running-board n.(汽車等車輛的)腳踏板
running water n. 自來水；活水