Air not only occupies space but it also has weight.

空气不仅占据空间，而且它还具有重量。

《新英汉大辞典》

Cosmic rays of various kinds come through the air from outer space, but enormous quantities of radiation from the sun are screened off.

来自外太空的各种宇宙射线通过空气进入大气层，但来自太阳的大量辐射却被屏蔽了。

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Along the way are tales of kings and queens, hot air balloons and monkeys in space.

一路上都有国王，皇后，热气球和太空猴子的故事。

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Last week,British billionaire Sir Richard Branson showed his new spaceship Enterprise at the Mojave Air and Space Port in California.

VOA: special.2009.12.18

Mars Day at the Smithsonian Air and Space Museum in Washington is a celebration of our solar system's most famous planet.

VOA: special.2010.07.28

Finally,leave space between the food containers and the walls of the cold storage area so air can flow.

VOA: special.2009.11.30

There is Space Air's environmental control system that keeps household air fresh and at the right temperature.

BBC: Home of the future mock-up

During this period it did not apply for a permit and when it next applied for a permit to fly in UK air space, in May 2002, it was granted, and it has since been flying regularly in British air space with the full approval of British safety officials.

BBC: The downed Egyptian plane was banned from Switzerland

As a result, what proudly was declared as recently as a month ago to be the visionary "Air and Space Force" for the 21st century is rapidly mutating into an Air and No Space Force.

CENTERFORSECURITYPOLICY: Clinton Policies Would Disarm U.S. Space Capabilit