vt.

1. 拖，曳
2. 跟踪；追猎[（+to）]
   The police trailed the thief.

   警察跟踪小偷。

3. 落后于
4. 拖带
   The boy trailed a toy horse after him.

   男孩将一匹玩具马拖在身后。

5. 在……上踩出路；标出（路）
6. 预告（节目）

vi.

1. 拖在或跟在（……的后面）[（+along/behind）]
   The children trailed behind their teacher.

   孩子们跟在老师后面走。

2. 拖沓行走
3. 拖曳；垂下
   The young girl's hair trailed over her shoulder.

   年轻姑娘的长发披肩。

4. （杂草等）蔓生[Q]
   There is ivy trailing all over the wall.

   常春藤蔓生整个墙面。

5. 追踪猎物
6. 减弱；变小[（+off/away）]

n.[C]

1. 痕迹；踪迹；足迹
   The hounds found the trail of the fox.

   猎犬发现了狐狸的踪迹。

2. （荒野中踏成的）小道
3. 一缕；一长串；一系列[（+of）]
   They made a trail of protests against the decision.

   他们对该项决定提出了一连串抗议。

4. 拖曳物，尾部；拖裾；蔓
   The wagon left a trail of dust.

   大篷车过处扬起一团灰尘。

n.

1. a mark or a series of signs or objects left behind by the passage of someone or something.
   ▸a track or scent used in following someone or hunting an animal.
2. a long thin part stretching behind or hanging down from something.
3. a beaten path through rough country.
4. a route planned or followed for a particular purpose:
   the tourist trail.
5. the rear end of a gun carriage, resting or sliding on the ground when the gun is unlimbered.

v.

1. draw or be drawn along behind.
   ▸(of a plant) grow along the ground or so as to hang down.
2. walk or move slowly or wearily.
   ▸(of the voice or a speaker) fade gradually before stopping.
3. follow the trail of.
4. be losing to an opponent in a game or contest.
5. advertise with a trailer.
6. apply (slip) through a nozzle or spout to decorate ceramic ware.