There were no windows to admit a moist atmosphere.

没有窗户使潮湿的空气进入室内。

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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.

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。

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A common thread linking the two phenomena is in the vital role played by moist processes in the atmosphere and how they can be affected by mean SST and interactive SST anomaly.

联系这两种现象最重要的作用是大气中的湿过程和受平均SST及起相互作用的SST距平影响的程度。

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The lifting mechanism pushes the moist air upward to a point in the atmosphere where the thinner air can no longer hold the moisture, at which time precipitation forms and falls to the ground.

FORBES: Venezuela: Recent Rain And Claims of Cloud Seeding