大气干旱是指大气温度过高、相对湿度过低以及干热风等特殊气象原因造成植物缺水的现象。
自然灾害是指大气、地质或水文等因素造成的灾变，包括地震、火山爆发、泥石流、海啸、洪水和干旱等。
Natural disasters are catastrophic events with atmospheric, geologic, and hydrologic origins. Disasters include earthquakes, volcanic eruptions, landslides, tsunamis, floods, and drought.
随着土地干旱、沙漠化面积增大，更多沙尘被风带进大气层。
A more of the world dries out and deserts expand, wind may pick up more dust into the atmosphere.
在那里，冷空气下沉，提高大气压力和抑制大部分沿太平洋海岸的雨，使它成为世界上最干旱的地区。
There, the cooled air sinks, raising atmospheric pressure and suppressing rain along most of the Pacific coast, making it one of the driest regions in the world.
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