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单词 speed
释义

speednoun

uk/spiːd/us/spiːd/

speed noun (RATE OF MOVEMENT)

B1 [ C or U ] how fast something moves:

He was travelling at a speed of 90 mph.
The car has a top speed of 155 miles per hour.
You should lower/reduce your speed as you approach a junction.
On a clear, straight road you can gather/pick up speed.
He came off the road while driving his car round a bend at high/breakneck speed (= very fast).
There are speed restrictions (= controls on how fast traffic is allowed to move) on this part of the road.
an electric drill with two speeds (= rates at which it turns)

B2 [ U ] very fast movement:

I get a real thrill from speed.
He put on a sudden burst of speed.
Both cars were travelling at speed (= very fast) when the accident happened.

[ U ] how fast something happens:

We were surprised at the speed of the response to our enquiry.
It was the speed at which it all happened that shocked me.
She got through her work with speed (= quickly) and efficiency.
the speed of light/sound

the rate at which light or sound travels:

The speed of light is 300 million metres per second.
These planes travel at twice the speed of sound.

[ C ] a gear noun :

a bicycle with ten speeds
a ten-speed bicycle

[ C ] the rate at which a photographic film absorbs or reacts to light:

What speed film do I need for taking photographs indoors?
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:

a high/low shutter speed

More examples

  • 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.

Thesaurus: synonyms and related words

Speed of motion

  • at full/half throttle idiom
  • brisk
  • burst
  • celerity
  • clip
  • clock
  • going
  • ground speed
  • momentum
  • pacy
  • rapid
  • rate
  • speedy
  • supersonic
  • swift
  • throttle
  • top
  • velocity
  • zip

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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

speed noun (DRUG)

[ U ] slang for amphetamine (= a drug that makes the mind or body more active):

She was on speed at the time.

Thesaurus: synonyms and related words

Specific types of drug

  • amyl nitrite
  • antiretroviral
  • blunt
  • cisplatin
  • coke
  • corticosteroid
  • designer drug
  • dope
  • downer
  • hash
  • junk
  • marijuana
  • methamphetamine
  • mind-altering
  • narcotic
  • pep pill
  • popper
  • skunkweed
  • stimulant
  • weed

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Idiom(s)

up to speed

speedverb [ I or T, usually + adv/prep ]

uk/spiːd/us/spiːd/sped or speeded, sped or speeded

to (cause to) move, go, or happen fast:

The train sped along at over 120 miles per hour.
The actress then sped away/off in a waiting car.
We sped down the ski slopes.
This year is speeding by/past.
Ambulances sped the injured people (= moved them quickly) away from the scene.
The best thing you can do to speed your recovery (= make it quicker) is to rest.
be speeding

to be driving faster than you are legally allowed to do:

He was caught speeding.

More examples

  • O'er land and sea they sped.
  • The car pulled off and sped up the road.
  • The train sped through the station with a whoosh.
  • We are trying to speed investment in the area.
  • Four boys on motorbikes came speeding down the road.

Thesaurus: synonyms and related words

Increasing and decreasing speed of motion

  • accelerant
  • accelerate
  • acceleration
  • brake
  • catch
  • catch (sb) up
  • decelerate
  • downshift
  • foot
  • gun
  • motor
  • quicken
  • retard
  • retardation
  • slacken
  • slow
  • slow (sb/sth) down/up
  • spurt
  • throttle (sth) back/down

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You can also find related words, phrases, and synonyms in the topics:

On the road: driving & operating road vehicles
Crime - general words

Phrasal verb(s)

speed (sth) up
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更新时间:2024/12/23 18:53:13