n.[C]

1. 行踪；轨道；足迹[P1]
   We followed his tracks in the snow to a hut.

   我们沿着他在雪地上留下的足迹走到一间小屋旁。

2. 小径，小道
3. 铁轨，轨道[P1]
   The train jumped the track.

   火车出轨了。

4. 【体】跑道；径赛运动
   He runs around the track every morning.

   他每天清晨绕着跑道跑步。

5. 历程；行动路线；思路
   You're on the wrong track.

   你想得不对了。

6. 惯例，常规
7. （坦克等的）履带

vt.

1. 跟踪；追踪[（+to）]
   It was not long before I tracked down the lost wallet.

   不久我就找到了遗失的钱包。

   The hunter tracked the wolf and managed to catch it.

   猎人追踪狼，并设法逮住它。

2. 沿着（道路）走
3. 走过，通过
4. 在……上留下足迹
   The dog tracked mud all over the shiny kitchen.

   狗在厨房发亮的地板上留下一屋子泥。

   The child rushed into the room and tracked dirt over the floor.

   小孩冲进房间，地板上全是带泥的脚印。

5. 为……铺轨

vi.

1. 追踪
2. 留下足迹
3. （摄影机）跟踪摄影[Q]
4. 走[（+about）]

n.

1. a rough path or minor road.
2. a prepared course or circuit for racing.
3. a mark or line of marks left by a person, animal, or vehicle in passing.
   ▸the course followed by someone or something.
4. a continuous line of rails on a railway.
5. a strip or rail along which something (e.g. a curtain) may be moved.
6. a continuous articulated metal band around the wheels of a heavy vehicle such as a tank, facilitating movement over difficult ground.
7. Electronics  a continuous line of conductive material on a printed circuit board, connecting parts of a circuit.
8. a section of a record, compact disc, or cassette tape containing one song or piece of music. [orig. denoting a groove on a gramophone record.]
   ▸a lengthwise strip of magnetic tape containing one sequence of signals.
9. the transverse distance between a vehicle's wheels.
10. US term for stream (in sense ³).

v.

1. follow the course or movements of.
   ▸ (track someone/thing down) find someone or something after a lengthy search.
   ▸follow a course.
   ▸(of a stylus) follow (a groove in a record).
   ▸(of a film or television camera) move in relation to the subject being filmed. [with ref. to early filming when a camera was mobile by means of a track.]
2. (of wheels) run so that the back ones are exactly in the track of the front ones.
3. Electronics  (of a tunable circuit or component) vary in frequency in the same way as another circuit or component.
4. (track something up) N. Amer. leave a trail of dirty footprints on a surface.
   ▸ (track something in) leave a trail of dirt or snow from one's feet.

v.