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длительный полет stresses
astronaut.	long-duration flight; long-term flight
длительный полёт
Apollo-Soyuz	long-duration flight
astronaut.	long-term flight
avia.	long-endurance mission; sustained flight; duration flight; long-lasting flight
длительный космический полёт
avia., med.	extended space flight

длительный полёт: 23 phrases in 6 subjects

Astronautics	10
Aviation	2
General	3
Military	5
Nanotechnology	1
Technology	2