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
tracking telephone exchange追踪电话交换
track structural parameters轨道结构参数
Track Coach of Old Shanghai旧上海的有轨电车
track transportation system有轨运输
track and field competition田径比赛
Track Laying Control Points铺轨基标
track laying and ballasting轨道铺设