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4 天
姗姗来迟的大雪,降落需要几步?
富含水蒸气的空气上升到高处,那里温度很低,水蒸气在空气中的灰尘、污染物、火山灰、海盐等固体小颗粒上,凝结成液滴,称为云滴(Cloud Droplet),云滴内部的小颗粒称为云凝结核(cloud condensation nuclei, CCN)。
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今日热点
Fed holds rates steady
Resumes ground operations
Sentenced for fraud
Lifts segregation ban
Hollywood director charged
1979 cold case solved
Exits Vancouver Auto Show
Propose banning 'tush push'
To serve as finance chair
Zoox recall
Smugglers found guilty
US visa records unsealed
Ex-studio engineer charged
Mexico City bullfighting ban
To cut civilian jobs
Florida Keys brush fire
Case transferred to NJ
In-person identity checks
Teachers union sues
Abduction tracking ends
Louisiana executes inmate
ICE detains activist
MetroCard sales to end
Sues Trump administration
Suit over firings, takeover
UN climate report
Lead investigator fired
Winter weather warnings
Issues dengue fever warning
Hit with EU antitrust actions
Jury finds Greenpeace liable
Files new bankruptcy plan
$175M in funding paused
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