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IELTS BNC: 1245 COCA: 1390

speed

Word family 
Related topics: Photography, Drug culture
speed1 /spiːd/ ●●● S2 W1 noun
1  of movement 運動的 [countableC, uncountableU]SPEEDFAST/QUICK the rate at which something moves or travels 速度，速率
The truck was travelling at a speed of 50 mph.
卡車正以 50 英裏的時速在行駛。
particles that travel at the speed of light.
以光速運動的粒子
 Register
In everyday English, people usually talk about how fast something or someone is rather than using the noun speed: 在日常英語中表示多快, 人們一般說 fast, 而不用名詞 speed
What speed was he going? → How fast was he going? 他當時有多快？
2  of action 行動的 [countableC, uncountableU]SPEED the rate at which something happens or is done 〔事件發生或進行的〕速度
speed of
the speed of change within the industry
該行業内部的變革速度
a high-speed computer
一台高速電腦
The population was growing at great speed.
人口在快速增長。
3  fast 快速的 [uncountableU] the quality of being fast 快，快速
The women’s basketball team has talent, speed, and power.
這支女子籃球隊天賦、速度和力量兼備。
with speed
She acted with speed and efficiency.
她的行動快速有效。
at speed British EnglishBrE
a van travelling at speed
快速行駛的小 貨車
4  photography 攝影 [countableC]
a) TCPthe degree to which photographic film is sensitive to light 感光速度
b) TCPthe time it takes for a camera shutter to open and close 快門速度
a shutter speed of 1/250 second
1/250 秒的快門速度
5. drug 毒品 [uncountableU] informalMDD an illegal drug that makes you very active 苯丙胺，脫氧麻黃堿，快速丸〔一種興奮劑〕 SYN amphetamine
6  five-speed/ten-speed etc TTBhaving five, ten etc gears 五速的/十速的等
a ten-speed bike
十速自行車
Examples from the Corpus
five-speed/ten-speed etc• It retains a five-speed gearbox: the 959 had six speeds.• The performance through the five-speed manual gearbox is impressive, and higher speed cruising is effortless and remarkably quiet.
7  up to speed having the latest information or knowledge about something 跟上形勢，了解最新情況
Some school officials are only now getting up to speed regarding computers.
有些學校官員在計算機方面現在才剛剛跟上形勢。
John will bring you up to speed (=tell you the latest information).
約翰將會爲你介紹最新情況。
Examples from the Corpus
bring ... up to speed• It took the company a year to bring them up to speed.• To bring consumers up to speed, telephone companies are revving up education campaigns.
→ full speed/steam ahead at full1(18)
 COLLOCATIONS – Meanings 1 & 2
verbs
increase your speed 增加速度
He increased his speed until he was running flat out.
他不停加速,直到全速奔跑。
gain/gather/pick up speed (=go faster) 加速
The Mercedes was gradually picking up speed.
那輛梅賽德斯逐漸加速。
reach a speed 達到某速度
The trains will reach speeds of 140 mph.
火車時速將可以達到每小時140英裏。
maintain a speed (=keep the same speed) 保持速度
The aircraft is designed to maintain a steady speed.
飛機被設計得可以定速飛行。
reduce speed (=slow down deliberately) 〔有意地〕減速
She reduced speed as she approached the village.
她快到村子的時候放慢了速度。
lose speed (=slow down without wanting to) 〔無意地〕減速
nThe engine made a strange sound and we lost speed.
ADJECTIVES/NOUN + speed
an average speed 平均速度
Our average speed was 88 mph.
我們的平均速度是每小時88英裏。
a constant/steady speed 恒定/穩定的速度
The disc revolves at a constant speed.
光碟以恒定速度旋轉。
a top/maximum speed (=the highest possible) 最高速度
The car has a top speed of 132 mph.
這車最高時速是132英裏。
wind speed (=the speed of the wind) 風速
nThe average wind speed will be about 14 knots.
air speed (=the speed of a plane in relation to the air around it) 空速
phrases
at high/great speed 以高速
The train was travelling at high speed.
列車正在高速行駛。
at low/slow speed 以低速
Even at low speed, an accident could mean serious injury for a child.
即使是低速行駛,交通事故也可能會使孩子受重傷。
at full speed (=running, driving etc as fast as possible) 以全速
He ran past us at full speed.
他全速從我們身邊跑過。
at/with lightning speed (=very quickly) 以閃電般的速度
nHe moved with his usual lightning speed.
at breakneck speed (=very quickly) 以不要命的速度
nHe drove away at breakneck speed.
speed + NOUN
a speed limit 速度限制
The speed limit is 40 mph here.
這裏限速每小時40英裏。
a speed restriction 速度限制
New speed restrictions have been introduced.
新的速度限制已經推行。
a speed camera (=designed to photograph vehicles going too fast) 測速照相機
nMost GPS systems will warn you when there are speed cameras.
Examples from the Corpus
speed• The Earth moves round the Sun at a speed of 30 km per second.• The train's designers claim it is capable of attaining speeds in excess of 350 kph.• Keep driving at a constant speed until I tell you differently.• The Embraer 120 turboprop is equipped with twin propellers designed to spin at a constant speed.• Internet advertising, until recently flourishing, is hitting its first speed bump.• Not surprisingly, our overall supply posture as well as its speed of response improved markedly.• sensors which monitor speed and body movement• the internal processing speed of a computer• Puncturing the three blisters received while trying to impress fellow teacup riders with spin speed, get in line for Matterhorn.• Palace lacked the speed of thought, the wit and the crisp execution that their boss displayed in his post-match press conference.• What was the speed of the car at the time of the accident?• For barbell take a note of the light, the colour of the water, the speed of current and the temperature.• The speed at which everything then happened made it all seem rather unreal: I just couldn't get comfortable.• The speed of change in the region has stunned everyone.• The Ferrari Testarossa has a top speed of 188 mph.• Watch your speed when the roads are wet.
at a speed of• At room temperature, atoms normally fly around at speeds of hundreds or thousands of miles per hour.• Local-area networks transmitting data at speeds of between 10 megabits per second and 100 megabits per second also exist.• Birds of prey have been registered nose-diving at speeds of up to 1 l 0 miles an hour.• They drove several miles at speeds of up to a hundred and twenty miles an hour.• The force proceeded southeast at a speed of 18 knots, zigzagging at intervals of five to ten minutes. 2.• A pea-sized projectile is hurtled into a target at speeds of up to sixteen thousand miles an hour.• Objects from space hit the Earth all the time-at speeds of more than 10 miles a second.• Shaun Gooch had turned his car into Akers Way at speeds of around eighty miles an hour.
at speed• The train was already travelling at speed when she tried to open the carriage door.
speed2 ●○○ verb (past tensepst and past participlepp sped /sped/ or speeded)
1  [intransitiveI always + adverbadv/prepositionprep]FAST/QUICK to go quickly 快行，疾走
The car sped along the dusty highway.
汽車在塵土飛揚的公路上疾馳。
2  [transitiveT always + adverbadv/prepositionprep]FAST/QUICK to take someone or something somewhere very quickly 快速運送
An ambulance sped her to the hospital.
一輛救護車把她快速送往醫院。
3  be speeding SCCSPEEDto be driving faster than the legal limit 超速駕駛
I got caught speeding on the A40 yesterday.
昨天我在 A40 號幹線公路上超速行駛被逮到。
Examples from the Corpus
caught speeding• Those visitors paid $ 769,000 last year after they were caught speeding.• In the meantime, motorists caught speeding through the contraflow can expect to receive a court summons in the post.• If the Duke had been caught speeding today ... his fine would probably have been something like seven hundred pounds.
4  (also speed something ↔ up) [transitiveT] to make something happen faster 加快，促進 OPP slow down
This news should speed his recovery.
這個消息應該會加快他的康複速度。
5 speed by phrasal verbphr v FAST/QUICKif time speeds by, it seems to pass very quickly 〔時間〕很快地過去，飛逝
The weeks sped by and soon it was time to go back to school.
幾個星期轉眼過去，很快又要開學了。
6 speed up phrasal verbphr v FAST/QUICKto move or happen faster, or to make something move or happen faster （使）加快速度 OPP slow down
The truck speeded up going down the hill.
卡車在下山時加快了速度。
speed something ↔ up
The new system will speed up the registration process.
這個新系統將加快注冊過程。
Examples from the Corpus
speed up• I'll phone the manager and get them to speed things up.• The company announced they're speeding up plans to expand the site.• Nancy, if you don't speed up we'll be here until midnight.
Examples from the Corpus
speed• She also wants the Legislature to increase penalties for drivers who speed in school zones.• This could speed the spread of labeling.• The changing nature of the corporation speeded this along.• To speed up publication the presentations have been used unaltered so the book lacks a coherent style or structure.• He says that the technique has meant they can speed up research time, helping to stay ahead of the field.• Now, inexplicably, just as he was about to reach his goal, things had suddenly speeded up.• With warming temperatures, the life cycle speeds up.• People visibly speeding will also get reported and residents will occasionally be joined by officers.
Origin speed1
Old English sped “success, quickness”

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