trackersn.追踪者（tracker的复数形式）trackn.轨道；跑道；踪迹；小路；乐曲v.追踪；跟踪Track Bar Bolt Installation横拉杆螺栓的安装track and field association田协Tracking Instruction Manual跟踪指导手册track following servosystem磁道跟踪伺服系统tracking in image sequences序列图像中的目标跟踪track-return power system路轨回流供电制Tracking Officer Technician跟踪技术军官(技师)Tracking Device Requirement训练设备要求track and field sports meet田径运动会track-and-field history田径史