单词	downdraught
释义	downdraught /ˈdaʊndrɑːft / (US downdraft) noun A downward current or draught of air.Slow the airplane to reduce impact forces; also, you'll likely encounter wind shear and strong downdrafts.... On any given afternoon, unstable breezes and moisture ratchet up cumulonimbus clouds in a whirlwind of updrafts and downdrafts that cause particles of rain, ice, and snow to collide. Normally, the air that's moving down, called a downdraft, shares the thunderstorm with the updraft.
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