[ noun ]
■ the mass of air surrounding the Earth
e.g.)
・there was great heat as the comet entered the atmosphere
・it was exposed to the air
→
air
,
atmosphere
[ noun ]
■ a mixture of gases (especially oxygen) required for breathing
■ the stuff that the wind consists of
e.g.)
・air pollution
・a smell of chemicals in the air
・open a window and let in some air
・I need some fresh air
→
air
[ noun ]
■ once thought to be one of four elements composing the universe (Empedocles)
→
air
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