velocity
noun
[U, C]
不規則形式 pl. -ies
1
(technical 術語) （沿某壹方向的）速度
the speed of sth in a particular direction
the velocity of light
光速
to gain/lose velocity
加 / 減速
a high-velocity rifle
高速步槍
2
(formal) 高速；快速
high speed
Jaguars can move with an astonishing velocity.
美洲豹跑起來速度驚人。
speed
noun
運動 / 行動速率 rate of movement/action
1
[C, U] （運動的）速度，速率
the rate at which sb/sth moves or travels
He reduced speed and turned sharp left.
他減慢速度，向左急轉。
The train began to pick up speed (= go faster) .
火車開始加速。
The car was gathering speed .
汽車逐漸加速。
a speed of 50 mph/80 kph
每小時50英裏 / 80公裏的速度
at high/low/full/top speed
以高 / 低 / 全 / 最高速
at breakneck speed (= fast in a way that is dangerous)
以不要命的速度
travelling at the speed of light/sound
以光速 / 音速行進
see also airspeed, ground speed
2
[C, U] （發生或進行的）速度；進度
the rate at which sth happens or is done
the processing speed of the computer
計算機的處理速度
This course is designed so that students can progress at their own speed.
這門課的設計思路是讓學生自己掌握進度。
We aim to increase the speed of delivery (= how quickly goods are sent) .
我們力爭提高送貨速度。
3
[U] 快；迅速
the quality of being quick or rapid
The accident was due to excessive speed.
事故的原因在於速度過快。
She was overtaken by the speed of events (= things happened more quickly than she expected) .
事態發展迅速為她始料所不及。
(formal) A car flashed past them at speed (= fast) .
壹輛汽車從他們身邊疾馳而過。
攝影 in photography
4
[C] 感光度
a measurement of how sensitive film for cameras, etc. is to light
5
[C] 快門速度
the time taken by a camera shutter to open and close
shutter speeds
快門速度