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clear air stresses
ecol.	прозрачный воздух; чистый воздух
Makarov.	небо ясно
meteorol.	ясная погода; безоблачная атмосфера

clear air: 79 phrases in 20 subjects

Aerohydrodynamics	1
Architecture	1
Aviation	13
Construction	1
Ecology	2
Electronics	2
General	13
Idiomatic	5
Informal	1
Makarov	12
Mass media	1
Medical	1
Meteorology	3
Military	11
Nanotechnology	1
Nautical	1
Quantum electronics	1
Technology	7
Telecommunications	1
Transport	1