turnedadj.翻转的动词turn的过去式和过去分词形式.turnv.翻转；旋转；转动；转向；轮流；（使）变得n.轮流；转动Turn left at market.在超市那里左转。turn up edging machine翻边机Turn off the engine.关闭引擎。turn -back of trains列车折返turn to dust and ashes化为泡影turn on switching time接通时间turn-picture control图像转换控制turn round a vibration扭转振动turnplate curve groove转盘曲线槽turn-angle algorithm转向角算法