speed
柯林斯词典
1. N-VAR The speed of something is the rate at which it moves or travels. (移动、运行的) 速度
He drove off at high speed. 他高速驾车离去了。
Wind speeds reached force five. 风速达到了5级。
2. N-COUNT The speed of something is the rate at which it happens or is done. (发生、完成的) 速度
In the late 1850s the speed of technological change quickened. 在19世纪50年代末，技术变革的速度加快了。
3. N-UNCOUNT Speed is very fast movement or travel. 快速
Speed is the essential ingredient of all athletics. 速度是所有体育运动的基本要素。
He put on a burst of speed. 他暴发出一阵猛冲。
4. N-UNCOUNT Speed is a very fast rate at which something happens or is done. (发生、完成的) 高速
I was amazed at his speed of working. 我对他工作的高速感到惊讶。
5. V-I If you speed somewhere, you move or travel there quickly, usually in a vehicle. (通常指乘车) 迅速疾驰
Trains will speed through the tunnel at 186 mph. 火车将以每小时186英里的速度快速穿过隧道。
6. V-I Someone who is speeding is driving a vehicle faster than the legal speed limit. 超速驾驶[usu cont]
This man was not qualified to drive and was speeding. 这个男子没有资格开车， 而且还在超速驾驶。
7. speedingN-UNCOUNT 超速驾驶
He was fined for speeding last year. 他去年因超速驾驶被罚了款。
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
返回 speed
speed /spiːd/ (speeding,speeded,speeds)
剑桥词典
- 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)
[ 可数名词：有复数形式的名词 or 不可数或单数名词：没有复数形式的名词 ]how fast something moves
速度，速率
He was travelling at a speed of 90 mph . 他以每小时90英里的速度行进。
The car has a top speed of 155 miles per hour . 这辆汽车的最高时速是155英里。
You should lower /reduce your speed as you approach a junction . 接近交叉路口时应该放慢速度。
On a clear , straight road you can gather /pick up speed. 在空旷笔直的公路上可以加速行驶。
He came off the road while driving his car round a bend at high/breakneck speed (= very fast ). 他在弯道上开得飞快，结果冲出了公路。
There are speed restrictions (= controls on how fast traffic is allowed to move ) on this part of the road . 这段路是限速的。
an electric drill with two speeds (= rates at which it turns ) 有两挡速度的电钻
[ 不可数或单数名词：没有复数形式的名词 ]
very fast movement
飞速，快速
I get a real thrill from speed. 飞速驾车会让我兴奋不已。
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 . 事故发生时两辆车的速度都很快。
[ 不可数或单数名词：没有复数形式的名词 ]
how fast something happens
（事情发生的）速度，进度
We were surprised at the speed of the response to our enquiry . 这么快就得到了答复，让我们很惊讶。
It was the speed at which it all happened that shocked me. 令我感到震惊的是整个事情发生得如此之快。
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. 光速是每秒钟3亿米。
These planes travel at twice the speed of sound . 这些飞机以两倍音速飞行。
[ 可数名词：有复数形式的名词 ]
a gear noun(ENGINE PART)
排挡，变速器
a bicycle with ten speeds 有10挡速度的自行车
a ten-speed bicycle 十速自行车
[ 可数名词：有复数形式的名词 ]
the rate at which a photographic film absorbs or reacts to light
（胶片的）感亮度
What speed film do I need for taking photographs indoors ? 我在室内拍照片需要感亮度为多少的胶卷？
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
快门速度
a high/low shutter speed 高／低快门速度
例句
speed noun (DRUG)
[ 不可数或单数名词：没有复数形式的名词 ]slang for amphetamine (= a drug that makes the mind or body more active )
苯丙胺，安非他明（一种兴奋剂）
She was on speed at the time . 她当时服了安非他明。