n.

1. 速率，速度[C][U]
   The train is travelling at a speed of sixty miles an hour.

   火车正以每小时六十英里的速度行驶。

2. 快速，迅速[U]
   You work with amazing speed.

   你工作起来速度奇快。

3. （胶片等的）感光速率；（摄影机的）曝光速率[C][U]
4. （汽车等的）变速装置，排档[C]
   The young man just bought a 10-speed bicycle.

   这个年轻人刚买了一辆十速自行车。

5. 【俚】脱氧麻黄碱（一种兴奋剂），安非他命[U]
6. 【古】幸运，成功；昌盛[U]

vi.

1. 迅速前进，快行[Q]
   The ambulance sped to the hospital.

   救护车急速向医院驶去。

2. （通常用进行时）行进得过快，超速行驶
   Tom was fined for speeding.

   汤姆因超速行车被罚款。

3. 加速[（+up）]
4. 【古】过日子；兴隆；成功

vt.

1. 快速传送；发射
   Now space satellites are used to speed long distance calls.

   现在人造卫星被用来快速传送长途电话。

2. 急速送至[O]
3. 促进；加快……的速度
   Fresh air and nutritious food will speed his recovery.

   呼吸新鲜空气，吃有营养的食物会促进他身体的康复。

4. 调整（机器等的）速率；使定速运行
5. 祝愿……一路平安；祝愿……早日成功
6. 【古】使成功；使兴隆

n.

1. the rate at which someone or something moves or operates or is able to move or operate.
   ▸rapidity of movement or action.
2. each of the possible gear ratios of a bicycle or (US) of a motor vehicle.
3. the light-gathering power or f-number of a camera lens.
   ▸the duration of a photographic exposure.
   ▸the sensitivity of photographic film to light.
4. informal an amphetamine drug, especially methamphetamine.
5. archaic success; prosperity.

v.

1. move quickly.
   ▸ (speed up) move or work more quickly.
   ▸ (also speed something up) cause to happen more quickly.
2. (of a motorist) travel at a speed greater than the legal limit.
3. informal take or be under the influence of an amphetamine drug.
4. archaic make prosperous or successful.