Let's say your plane does depressurize.

飞机上气压会降低。

On this dwarf planet, the air pressure would also be small.

在这颗上，气压也会很小。

There was a deafening hissing and crackling, and the needle on the air pressure indicator dropped from 70 to 65 to 60 pounds in two seconds.

后发出了震耳欲聋的嘶嘶和，气压计上的指针在两秒内从70降到65，降到60磅。

The first warning he had that there was trouble ahead came when he glanced into the Wasp's cabin and observed that the barometer had fallen sharply.

第一个麻烦来了。他瞥了一眼黄蜂号的船舱，发现里面的气压计上的指数在飞速的往下降。