speed
柯林斯詞典
1. N-VAR The speed of something is the rate at which it moves or travels. (移動、運行的) 速度
He drove off at high speed. 他高速駕車離去了。
Wind speeds reached force five. 風速達到了5級。
2. N-COUNT The speed of something is the rate at which it happens or is done. (發(fā)生、完成的) 速度
In the late 1850s the speed of technological change quickened. 在19世紀50年代末，技術變革的速度加快了。
3. N-UNCOUNT Speed is very fast movement or travel. 快速
Speed is the essential ingredient of all athletics. 速度是所有體育運動的基本要素。
He put on a burst of speed. 他暴發(fā)出一陣猛沖。
4. N-UNCOUNT Speed is a very fast rate at which something happens or is done. (發(fā)生、完成的) 高速
I was amazed at his speed of working. 我對他工作的高速感到驚訝。
5. V-I If you speed somewhere, you move or travel there quickly, usually in a vehicle. (通常指乘車) 迅速疾馳
Trains will speed through the tunnel at 186 mph. 火車將以每小時186英里的速度快速穿過隧道。
6. V-I Someone who is speeding is driving a vehicle faster than the legal speed limit. 超速駕駛[usu cont]
This man was not qualified to drive and was speeding. 這個男子沒有資格開車， 而且還在超速駕駛。
7. speedingN-UNCOUNT 超速駕駛
He was fined for speeding last year. 他去年因超速駕駛被罰了款。
8. N-UNCOUNT Speed is an illegal drug such as amphetamine which some people take to increase their energy and excitement. 快速丸[非正式]
9. to pick up speed→see pick up
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speed /spi?d/ (speeding,speeded,speeds)
劍橋詞典
- The hummingbird beats its wings at great speed.
- With this drill it's possible to adjust the speed of rotation .
- The engine shuts off automatically when the desired speed is reached .
- Slack off your speed as you approach the corner .
- The police car drove past at a terrific speed.
speed noun (RATE OF MOVEMENT)
[ 可數名詞：有復數形式的名詞 or 不可數或單數名詞：沒有復數形式的名詞 ]how fast something moves
速度，速率
He was travelling at a speed of 90 mph . 他以每小時90英里的速度行進。
The car has a top speed of 155 miles per hour . 這輛汽車的最高時速是155英里。
You should lower /reduce your speed as you approach a junction . 接近交叉路口時應該放慢速度。
On a clear , straight road you can gather /pick up speed. 在空曠筆直的公路上可以加速行駛。
He came off the road while driving his car round a bend at high/breakneck speed (= very fast ). 他在彎道上開得飛快，結果沖出了公路。
There are speed restrictions (= controls on how fast traffic is allowed to move ) on this part of the road . 這段路是限速的。
an electric drill with two speeds (= rates at which it turns ) 有兩擋速度的電鉆
[ 不可數或單數名詞：沒有復數形式的名詞 ]
very fast movement
飛速，快速
I get a real thrill from speed. 飛速駕車會讓我興奮不已。
He put on a sudden burst of speed. 他突然加速了。
Both cars were travelling at speed (= very fast ) when the accident happened . 事故發(fā)生時兩輛車的速度都很快。
[ 不可數或單數名詞：沒有復數形式的名詞 ]
how fast something happens
（事情發(fā)生的）速度，進度
We were surprised at the speed of the response to our enquiry . 這么快就得到了答復，讓我們很驚訝。
It was the speed at which it all happened that shocked me. 令我感到震驚的是整個事情發(fā)生得如此之快。
She got through her work with speed (= quickly ) and efficiency . 她快速而高效地完成了她的工作。
?the speed of light/sound
the rate at which light or sound travels
光／音速
The speed of light is 300 million metres per second. 光速是每秒鐘3億米。
These planes travel at twice the speed of sound . 這些飛機以兩倍音速飛行。
[ 可數名詞：有復數形式的名詞 ]
a gear noun(ENGINE PART)
排擋，變速器
a bicycle with ten speeds 有10擋速度的自行車
a ten-speed bicycle 十速自行車
[ 可數名詞：有復數形式的名詞 ]
the rate at which a photographic film absorbs or reacts to light
（膠片的）感亮度
What speed film do I need for taking photographs indoors ? 我在室內拍照片需要感亮度為多少的膠卷？
?shutter speed
the length of time for which part of a camera is open to allow light to reach the film when a photograph is being taken
快門速度
a high/low shutter speed 高／低快門速度
例句
speed noun (DRUG)
[ 不可數或單數名詞：沒有復數形式的名詞 ]slang for amphetamine (= a drug that makes the mind or body more active )
苯丙胺，安非他明（一種興奮劑）
She was on speed at the time . 她當時服了安非他明。