visible water vapour floating in the sky
mass of smoke, dust, sand, etc. in the air; mass of insects moving together in the sky
thing that causes unhappiness, uncertainty, etc.
(cause sth to) become dull, unclear or indistinct
(of sb's face) show sadness or worry
"his head was in the clouds"
"the only cloud on the horizon was the possibility of dissent by the French"
"after that mistake he was under a cloud"
"a swarm of insects obscured the light"
"clouds of blossoms"
"it discharged a cloud of spores"
"Fall weather often overcasts our beaches"
"The stars are obscured by the clouds"
"the big elm tree obscures our view of the valley"
"The smoke clouded above the houses"
"Their faces were clouded with sadness"
"sully someone's reputation"
"the stroke clouded memories of her youth"
"The chemical clouded the liquid to which it was added"
She is advanc'd Above the clouds, as high as heaven itself.
出自：Romeo Juliet , Shakespeare
Big rain clouds raced across the moon.
出自： L. Deighton
La Condesa rose lightly as a cloud.
出自： K. A. Porter
Cloud may reduce light intensity to as little as five per cent of that of the full sun.
出自： Anthony Huxley
The windows have clouded up in the steam.
窗户在水汽中变得模糊不清了。 cloud sth ⇔ up
The steam has clouded the windows up.
误 Can you see the plane flying in clouds?
正 Can you see the plane flying in the clouds?
析 in the clouds可表示“在高空中飞”, the不可以省略。