speed [動詞] 加速;促進; [名詞] 速度
speed
[spi:d]
n.速度, 迅速
v.加速, 急行
例句與用法：
The train soon speeded up.
火車不久就加快了速度。
This plane can reach speeds in excess of 1000 kilometers an hour.
這架飛機可以達到每小時一千公里以上的速度。
We'd better speed up if we want to get there in time.
如果我們想準時到達那裡，我們最好加快速度。
The police are advising motorists to reduce speed because of the fog.
由於有霧，警察告誡駕車者減慢速度。
The holidays simply sped by.
假期簡直是一晃而過。
詞形變化：
動詞過去式: sped/speeded | 動詞過去分詞: sped/speeded | 動詞現在分詞: speeding | 動詞第三人稱單數: speeds |
英文解釋:
名詞 speed:
distance travelled per unit time
同義詞：velocity
a rate (usually rapid) at which something happens
changing location rapidly
the ratio of the focal length to the diameter of a (camera) lens system
同義詞：focal ratio, f number, stop number
a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression
同義詞：amphetamine, pep pill, upper
動詞 speed:
step on it
同義詞：rush, hotfoot, hasten, hie, race, pelt along, rush along, cannonball along, bucket along, belt along
move faster
同義詞：accelerate, speed up, quicken
travel at an excessive or illegal velocity
move very fast
同義詞：travel rapidly, hurry, zip
cause to move faster
同義詞：accelerate, speed up
以上來源於大辭典
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