The air tank contains high-pressure purified air and is exactly like the tank used by a SCUBA diver.

空气瓶内装有纯净高压空气，很像 SCUBA 潜水员用的气瓶。

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For example, in fair weather, the air pressure is generally high, the air is still, and often full of dust.

例如，在晴朗的天气里，气压通常很高，空气是静止的，而且经常含有灰尘。

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This weather balloon will mostly measure temperature, air pressure, and wind speed, but others sample the air for the concentration of various gases like carbon dioxide and oxygen.

气象气球主要是用来测定温度，气压和风速的，另外它还能够测出空气中很多种气体的含量，例如二氧化碳和氧气等。

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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

Bigger livestock herds are putting greater pressure on land resources and disrupting some ecosystems and the animals generate significant amounts of water and air pollution, including methane, a climate-changing greenhouse gas.

VOA: standard.2010.02.22

Gravity bombs are designed to be dropped from planes and must be able to withstand vibrations and changes in air temperature and pressure during the course of a flight.

CENTERFORSECURITYPOLICY: US Nuclear Stockpile

If I take 7 lbs. of air pressure out of a balloon and replace it with 3 lbs. of air pressure, is the balloon inflated or deflated from its previous state?

FORBES: Don't Get Hyped Up About Hyperinflation

Researchers using the car-sized mobile laboratory have identified transient whirlwinds, mapped winds in relation to slopes, tracked daily and seasonal changes in air pressure, and linked rhythmic changes in radiation to daily atmospheric changes.

ENGADGET: Curiosity rover finds radiation levels on Mars are safe for humans