海拔每上升1000米大气压力- - -也就是空气密度- - -会降低大概11%(虽然精确的公式比这要更复杂。)

Every 1000 metres increase in altitude reduces atmospheric pressure - and hence the density of the air - by about 11 per cent (though the precise formula is more complicated than this).

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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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我们从大气压力(地球表面的空气压力)的一立方英寸氢气开始。

We will start with a cubic inch of hydrogen at atmosphere pressure (or the air pressure at the earth's surface).

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