单词详解

1. n.

A. [C][U] 速率，速度 ( distance travelled per unit time)
The train is travelling at a speed of one hundred miles an hour.
火车正以每小时一百英里的速度行驶。

B. [U] 快速，迅速 [ a rate (usually rapid) at which something happens]
You work with amazing speed. 你工作起来速度奇快。

2. vi.

迅速前进，快行 ( move faster)
The ambulance sped to the hospital. 救护车急速向医院驶去。

The train soon speeded up. 火车不久就加快了速度。

3. vt.

A. 快速传送，发射 ( a central nervous system stimulant that increases energy and decreases appetite, used to treat narcolepsy and some forms of depression)

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。

B. 促进，加快……的速度 ( cause to move faster)
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。

相关词组

1. speed up 加速

We’d better speed up if we want to get there in time.

如果我们想准时到达那里，我们最好加快速度。

2. at full (top) speed 用全速，开足马力，尽力地，尽快地

After driving at top speed, he arrived half an hour early. 由于全速行驶，他早到半个小时。

3. low speed 低速；慢速

The police are advising motorists to drive in low speed because of the fog.

由于有雾，警察告诫驾车者减慢速度。

相关单词

过去式：sped/speeded

过去分词：sped/speeded

现在分词：speeding

第三人称单数：speeds