Ringann.林根ringn.戒指；环；圈；拳击场；马戏场；帮派n.铃声；钟声；电话；口气v.包围；环绕；形成圈v.打电话；回响；鸣响；按铃；听上去ring drill excision环钻切除ring hip prosthesis环形人工髋关节ring-fanned holes扇形炮孔组Ring detector array环状阵列式探测器ringing supervision振铃监视ring down on oneself招致ring of exhaust port排气口圈ringshaped sprinkler环形喷灌机ringside instruction台边指导ring efflux flotator环射式浮选机

ring downvt.落幕(拉幕；结束)