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BNC: 2333 COCA: 1914

cloud

Word family 
Related topics: Nature
cloud1 /klaʊd/ ●●● S3 W3 noun
1  clouds.jpg in the sky 在天空中 [countableC, uncountableU]DN a white or grey mass in the sky that forms from very small drops of water 雲
heavy/thick/dense etc clouds
Dark clouds floated across the moon.
烏雲飄過月亮。
Heavy clouds had gathered over the summit of Mont Blanc.
勃朗峰上濃雲密布。
low/high cloud
Visibility was bad due to low cloud.
因爲低空有雲，能見度很差。
→ storm cloud, thundercloud
2  in the air 在空中AMOUNT [countableC] a mass of dust, smoke etc in the air, or a large number of insects flying together 〔一團灰塵、煙霧或大批飛行的昆蟲等的〕雲狀物
cloud of dust/smoke/gas etc
A cloud of steam rose into the air.
一團水蒸氣升到空中。
clouds of mosquitoes buzzing around us
成群成群圍着我們嗡嗡叫的蚊子
3  problem 問題WORRIED [countableC] something that makes you feel afraid, worried, unhappy etc 陰影，陰雲〔指令人恐懼、擔憂、不快等的事物〕
cloud of
the cloud of economic recession
經濟衰退的陰雲
cloud on the horizon (=something that might spoil a happy situation) 令人擔憂的事
The only cloud on the horizon was her mother’s illness.
唯一的憂慮是她母親患病。
Fears of renewed terrorist attacks cast a cloud over the event (=spoilt the happy situation).
對恐怖分子再次發動襲擊的擔心給這次活動蒙上了一層陰影。
He returned to New York under a cloud of gloom and despair.
他心灰意冷地回到了紐約。
4  under a cloud (of suspicion) informalSUSPECT if someone is under a cloud, people have a bad opinion of them because they think they have done something wrong 遭嫌棄，受懷疑
He left the company under a cloud of suspicion.
他遭到懷疑，離開了公司。
Examples from the Corpus
under a cloud (of suspicion)• The sight of these two storming along under a cloud of canvas is enough to stir the blood of most landlubbers.• For all these reasons wooden aeroplanes are under a cloud at the moment.• He passes away under a cloud, inscrutable at heart, forgotten, unforgiven, and excessively romantic.• According to the researchers, the new cell actually works better under cloud cover than in full sunlight.• We argued about it, and when I left, I left under a cloud.• Decades of wallpaper peeling under clouds of dust.• Not only must they care for distressed and disturbed young people, but they must do so under a cloud.• Sometimes the pressure we were under clouded our judgment.
5. be on cloud nine informalHAPPY to be very happy about something 非常興奮，非常高興
Examples from the Corpus
be on cloud nine• Adam was on cloud nine after the birth of his son.• I recognised it right away, and I was on Cloud Nine.
6. every cloud has a silver lining HOPEused to say that there is something good even in a situation that seems very sad or difficult 黑暗中總有一線光明
7. be/live in cloud-cuckoo-land British EnglishBrECRAZY to think that a situation is much better than it really is, in a way that is slightly stupid 生活在幻想世界
n8  the cloud technical the Internet used as something that provides software or space for storing information, rather than having it on your own computer
They offer a variety of services in the cloud.
→ have your head in the clouds at head1(24)
n COLLOCATIONS
ADJECTIVES/NOUN + cloud
a black/grey cloud
Black clouds usually mean rain.
a dark cloud (=a black or grey cloud)
A dark cloud covered the sun.
a white cloud
There was a bright blue sky with a few white clouds.
heavy/thick cloud (also dense cloud formal)
By midday, heavy clouds had spread across the sky.
low/high cloud
The weather was overcast, with heavy low clouds.
storm clouds
Dark storm clouds were moving in from the Atlantic.
rain clouds
The sky had been full of rain clouds for days.
phrases
a bank/mass of cloud (=a large block of cloud)
A heavy bank of cloud was creeping across the sky.
a layer of cloud
The moon was shining through a thin layer of cloud.
wisps of cloud (=long thin pieces)
The plane flew through occasional wisps of cloud.
a band of cloud (=a long narrow area)
Long narrow bands of cloud stretched across the valley.
a blanket of cloud (=a thick layer)
In the morning, a blanket of cloud still covered the country.
a veil of cloud (=a thin layer)
A thin veil of cloud hid the moon.
verbs
clouds gather/form
The sky had darkened and clouds had gathered.
clouds cover something
For days thick cloud had covered the whole sky.
clouds clear/lift (=disappear)
At last the rain had stopped and the clouds had cleared.
clouds part (=move away from each other)
Suddenly the clouds that covered the moon parted.
clouds move/roll
A narrow band of cloud has been moving across the country.
clouds drift/float (=move slowly)
A few clouds drifted across the top of the mountains.
clouds race/scud (=move quickly)
A wind was blowing and soft clouds were scudding across the sky.
clouds hang
Heavy grey clouds hung low in the sky.
cloud + NOUN
cloud cover
The cloud cover should disappear by the afternoon.
cloud formation (=the shape in which cloud forms)
There are many different types of cloud formation.
n THESAURUS
cloud noun [countableC, uncountableU] a white or grey mass in the sky that forms from very small drops of water
The storm was still a way off but black clouds were gathering.
Thick cloud obscured the top of the hill.
fog noun [countableC, uncountableU] very thick cloud near the ground which is difficult to see through
The cars crashed into each other in thick fog.
The fog had lifted (=disappeared)slightly.
mist noun [countableC, uncountableU] light cloud near the ground that makes it difficult for you to see very far. Mist is usually not as thick as fog. You often get mist near areas of water or mountains
The morning mist was lifting and the sun was coming up.
A grey mist hung over the water.
The hills were shrouded in mist (=surrounded by mist).
haze noun [singular, uncountableU] smoke, dust, or mist in the air which is difficult to see through
He saw the horses coming towards him through a haze of dust.
The road shimmered in the heat haze.
A pale blue haze hung over the far-off mountains.
smog noun [countableC, uncountableU] dirty air that looks like a mixture of smoke and fog, caused by smoke from cars and factories in cities
The city is covered in smog for much of the year.
A smog warning was issued for parts of Southern Oregon.
thundercloud noun [countableC] a large dark cloud that you see before or during a storm
He watched the thunderclouds roll across the valley.
vapour trail British EnglishBrE, vapor trail American EnglishAmE noun [countableC] the white line that is left in the sky by a plane
High overhead, a jet left its vapour trail across the blue sky.
Examples from the Corpus
cloud• a cloud of flies• Dark clouds gathered overhead.• Dense cloud prevented the rescue helicopter from taking off.• Under dark, heavy clouds, I returned to the den on the river.• If clouds ap-peared, the clock hid behind them.• The sun was setting in a blaze of pink, casting rosy shadows on the undersides of large, wet-looking clouds.• The plane was unable to land due to strong winds and low cloud cover.• A band of cloud stretched low across the valley and it was raining slightly.• Above shone the stars and the rings; below lay a dimly visible sea of clouds.• There wasn't a single cloud in the sky.• All the buildings shook, and at the same time a forked tongue of flame burst upward through the cloud.• These clouds are unbroken, and never, for example, look like the billowy cumulus clouds of the Earth.• As the road climbed upward, gray-white cloud veils drifted among the dales, chiffon scarves of some giant Isadora Duncan.
heavy/thick/dense etc clouds• Under dark, heavy clouds, I returned to the den on the river.• Dark clouds rolled over denser, thicker clouds and merged with them.• Standard polyurethane foam ignites rapidly, forming dense clouds of smoke and toxic vapour as it does so.• By morning thick clouds drift over, but the sky between them is deep blue and occasionally the sun peeks through.• Looking northwards towards the end of the dale, she frowned to see the accumulation of heavy clouds above the moors.• Weather satellite images of the area taken from synchronous orbit show an immense circular area of dense clouds above the impact site.• The sun was down, but there was still light buried in the thick clouds patrolling the sky.• Unfortunately the fireworks must have seeded the thick clouds overhead because it absolutely poured with rain, and we got soaked.
cloud of dust/smoke/gas etc• Then in a cloud of dust he was gone.• Another chunk of wall collapsed, sending up a billowing cloud of dust.• Standard polyurethane foam ignites rapidly, forming dense clouds of smoke and toxic vapour as it does so.• As long as a comet nucleus is still active, fresh clouds of dust are emitted at each perihelion passage.• The fire sent up a huge cloud of smoke visible from San Francisco, 40 miles to the south.• Instead it is a massive cloud of dust, radiating 99% of its energy at far infrared wavelengths.• Above the bare-branched trees on the edge of his vision he could see clouds of smoke.• Decades of wallpaper peeling under clouds of dust.
cloud of• Businesses are worried by the clouds of a possible trade war.
cloud2 verb
1  THOUGHTS/MEMORIES[transitiveT]CONFUSED to make someone less able to think clearly or make sensible decisions 把…搞糊塗
cloud somebody’s judgment/mind/vision etc
Don’t let your personal feelings cloud your judgement.
不要讓你的個人感情蒙蔽你的判斷力。
Fear had clouded his vision.
恐懼模糊了他的判斷。
2  FACE[intransitiveI, transitiveT] (also cloud over)SAD/UNHAPPY if someone’s face or eyes cloud, or if something clouds them, they start to look angry, sad, or worried （使）顯得陰沉；（使）憂鬱
Ann’s eyes clouded with the pain.
安因爲痛苦眼睛黯然無光。
Then suspicion clouded his face.
然後他滿臉疑惑。
3  SPOIL something[transitiveT]SPOIL to make something less pleasant or more difficult than it should have been 使…蒙上陰影，使…不開心；使…難做
Her happiness was clouded by having to leave her son behind.
她不得不把兒子留下，因而幸福中摻雜了些許遺憾。
n Grammar
Cloud is usually passive in this meaning.
4  cloud the issue/picture etc CLEAR/EASY TO UNDERSTANDto make a subject or problem more difficult to understand or deal with, especially by introducing unnecessary ideas 〔尤指用無關信息〕使問題複雜化
Uninformed judgments only cloud the issue.
無知的意見只會使問題變得複雜。
Examples from the Corpus
cloud the issue/picture etc• These comments should not be allowed to cloud the picture too much.
5  GLASS[intransitiveI, transitiveT] (also cloud up)SEE if glass or a liquid clouds, or if something clouds it, it becomes less clear and more difficult to see through （使）〔玻璃〕變模糊；（使）〔液體〕變渾濁
windows clouded up with steam
因爲凝結了水蒸氣而變得模糊的玻璃窗
The water clouded and I could no longer see the river bed.
水變得渾濁，我再也看不清河床了。
6  COVER WITH CLOUD[transitiveT]COVER to cover something with clouds 〔雲霧〕籠罩，遮蓋
Thick mist clouded the mountain tops.
濃霧籠罩着山頂。
7 cloud over phrasal verbphr v 
a) DN (also cloud up American EnglishAmE)DARK if the sky clouds over, it becomes dark and full of black clouds 〔天空〕陰雲密布，烏雲翻滾
b) ANGRYSAD/UNHAPPYif someone’s face or eyes cloud over, they start to look angry or sad 〔臉上或眼睛〕露出愠怒[悲傷]的神色
His face clouded over in disappointment.
他一臉失望的神情。
Examples from the Corpus
cloud• The fact that you have enjoyed a few jars together will not cloud a journalist's judgement.• The decision to put a parent in a nursing home can be clouded by guilt.• But her happiness is clouded by having to leave daughter Amber behind.• But images of the period are shrouded in myth and clouded by partisan rhetoric.• The team's victory was clouded by the tragic events in their hometown.• Bethany poised over the bed, a slight abstract frown clouding her face.• Alcohol had clouded his judgment.• When I got back to the cabin the sky had started to cloud over.• However, the shadow of war was beginning to cloud the cricket world.• His face clouded when he saw her.• The display cases were clouded with dust.
cloud3n adjectiveadj [only before noun]
n1 using or related to cloud computing
cloud storage of data
Origin cloud1
Old English clud “rock, hill”; because some clouds look like rocks

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