And then up into the swirl around the axis, the wind always Tornado of the cyclone, its central pressure than the surrounding air pressure low 10 percent.

并随即变为绕轴心向上的涡流，龙卷中的风总是气旋性的，其中心的气压可以比周围气压低百分之十。

youdao

When a bad weather low moves in, air pressure lessens, and odors are released.

当恶劣天气到来，气压降低、气味释放。

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One technical difficulty is cavitation, where low pressure behind a turning blade causes air bubbles.

一个技术难题是气穴现象，一旦发生气穴现象，位于旋转螺旋桨叶后方的低压会产生气泡。

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All this wet air is pulled in by a high pressure area over the Indian Ocean and a low pressure area to the south.

VOA: special.2010.05.25

NOAA scientists say Katrina's air pressure was very low.

VOA: special.2010.08.24

The second is the low barometric air pressure.

VOA: special.2010.06.30

When the differential is in positive territory (red) it means higher, stronger air over the North Atlantic pushes up on the low-pressure air over the Arctic circle.

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The reason for the excitement is that, although the existence of ice on Mars has been known since 1666, when the planet's polar caps were first seen, the low temperatures and air pressure there mean that water, even if heavily salted, is likely either to freeze or to evaporate.

ECONOMIST: Water on Mars

When there is no wind, for example, heat builds up in a city, creating a low-pressure system that pulls air into the city.

CNN: In-Depth Specials - City Limits