我经常住在少水的干燥地区。
大气低层的水汽量在干燥地区(量)甚微,而在潮湿地区按体积占4%左右。
Water vapor in the lower atmosphere can vary in amount from a mere trace in arid regions to about 4% by volume in moist areas.
它们并不常见,除了在赛马场盐湖有,在其他一些时有洪水的干燥地区也有。
They are rare but they have been noticed in Racetrack Playa and a few other arid places around the world subject to occasional floods.
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