speed
noun
uk/spiːd/us/spiːd/speednoun(RATE OF MOVEMENT)
B1[CorU]
howfastsomethingmoves:
速度，速率He wastravellingat aspeedof90mph.他以每小时90英里的速度行进。
Thecarhas atopspeedof155milesperhour.这辆汽车的最高时速是155英里。
You shouldlower/reduceyourspeed as youapproachajunction.接近交叉路口时应该放慢速度。
On aclear,straightroadyou cangather/pickupspeed.在空旷笔直的公路上可以加速行驶。
He came off theroadwhiledrivinghiscarround abendathigh/breakneckspeed(= veryfast).他在弯道上开得飞快，结果冲出了公路。
There are speedrestrictions(=controlson howfasttrafficisallowedtomove)on thispartof theroad.这段路是限速的。
anelectricdrillwith two speeds(=ratesat which itturns)有两挡速度的电钻
slowly
- slowlyI got out of bed and walked slowly to the door.
- slowGo slower! I can't keep up.
- at a slow paceThey are easy hikes, done at a slow pace.
- at a slow speedYou only have to hit a pedestrian at a slow speed to kill them.
- at slow rateThe economy grew at a slower rate during the second half of the year.
B2[U]
veryfastmovement:
飞速，快速I get arealthrillfrom speed.飞速驾车会让我兴奋不已。
He put on asuddenburstof speed.他突然加速了。
Bothcarsweretravellingatspeed(= veryfast)when theaccidenthappened.事故发生时两辆车的速度都很快。
[U]
howfastsomethinghappens:
（事情发生的）速度，进度We weresurprisedat the speedoftheresponsetoourenquiry.这么快就得到了答复，让我们很惊讶。
It was the speed at which it allhappenedthatshockedme.令我感到震惊的是整个事情发生得如此之快。
She got through herworkwithspeed(=quickly)andefficiency.她快速而高效地完成了她的工作。
the speed of light/sound
therateat whichlightorsoundtravels:
光／音速The speed oflightis 300 millionmetrespersecond.光速是每秒钟3亿米。
Theseplanestravelattwicethe speed ofsound.这些飞机以两倍音速飞行。
[C]
agear:
排挡，变速器abicyclewith ten speeds有10挡速度的自行车
a ten-speedbicycle十速自行车
[C]
therateat which aphotographicfilmabsorbsorreactstolight:
（胶片的）感亮度What speedfilmdo I need for takingphotographsindoors?我在室内拍照片需要感亮度为多少的胶卷？
shutter speed
thelengthoftimefor whichpartof acameraisopentoallowlighttoreachthefilmwhen aphotographis being taken:
快门速度a high/lowshutterspeed高／低快门速度
- Thehummingbirdbeatsitswingsatgreatspeed.
- With thisdrillit'spossibletoadjustthe speed ofrotation.
- Theengineshutsoffautomaticallywhen thedesiredspeed isreached.
- Slack offyourspeed as youapproachthecorner.
- Thepolicecardrovepast at aterrificspeed.
Speed of motion
- airspeed
- at full/half throttleidiom
- briskness
- burst
- celerity
- clip
- clock
- fleetness
- gallop
- ground speed
- hypersonic
- instantaneous velocity
- multi-speed
- pace
- pacy
- rapidity
- rate
- supersonic
- velocity
- zip
You can also find related words, phrases, and synonyms in the topics:
Hurrying and doing things quickly
Fast and rapid
The engine & engine parts
Bicycles
Photography
speednoun(DRUG)
[U]
slangforamphetamine(= adrugthat makes themindorbodymoreactive):
苯丙胺，安非他明（一种兴奋剂）She wasonspeed at thetime.她当时服了安非他明。
Specific types of drug
- alprazolam
- amnesiac
- amyl nitrite
- anaphrodisiac
- anti-AIDS
- anti-aphrodisiac
- aphrodisiac
- barbiturate
- caffeine
- designer drug
- gas and air
- GHB
- hallucinogen
- khat
- legal high
- LSD
- MDMA
- psychedelic
- roach
- smack
Grammar
Measurements
We use the nouns length, width, depth and height and the adjectives long, wide, deep and high to talk about area and size:…Area: length, width, depth and height
We use the nouns length, width, depth and height and the adjectives long, wide, deep and high to talk about area and size:…Weight and volume
We use the verb weigh to measure weight:…Frequency, speed, time
We use many different expressions to describe frequency, speed and time. Here are some of them:…Idiom
up to speed
speed
verb[IorT,usually+ adv/prep]
uk/spiːd/us/spiːd/spedorspeeded|spedorspeededto (causeto)move, go, orhappenfast:
（使）快速移动；（使）快速前行；加速；促进Thetrainspedalongat over 120milesperhour.火车以每小时120多英里的速度飞驰。
Theactressthen spedaway/offin awaitingcar.后来女演员钻进了一辆等候的汽车，迅速离开了。
We speddowntheskislopes.我们飞速滑下滑雪坡。
Thisyearis speedingby/past.这一年过得特别快。
Ambulances sped theinjuredpeople(=movedthemquickly)away from thescene.救护车载着伤员飞速驶离现场。
Thebestthing you can do to speedyourrecovery(= make itquicker)is torest.尽快让身体康复的最佳方法就是休息。
to move fast
- speedHe ran back to his car and sped off.
- raceShe raced over and hugged me.
- flyShe flew across the room just in time to stop the baby falling off the chair.
- beltUKTraffic was belting along the motorway.
- tearA fire truck came tearing down the road.
- streakBullets streaked across the sky.
be speeding
to bedrivingfasterthan you arelegallyallowedto do:
违法超速行驶He wascaughtspeeding.他超速行驶被抓住了。
- O'erlandandseathey sped.
- Thecarpulledoff and sped up theroad.
- Thetrainsped through thestationwith awhoosh.
- We aretryingto speedinvestmentin thearea.
- Fourboysonmotorbikescame speeding down theroad.
Increasing and decreasing speed of motion
- accelerant
- accelerate
- accelerating
- acceleration
- brake
- catch
- catch(someone)up
- dampener
- foot
- gun
- non-accelerating
- quicken
- retard
- retardation
- self-accelerating
- slow
- step on the gasidiom
- throttle(something)back/down
- upshift
- upshifting
You can also find related words, phrases, and synonyms in the topics:
On the road: driving & operating road vehicles
Crime - general words
Phrasal verb
speed(something)up