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связь с внеземной цивилизацией stresses
avia.	communication with extra-terrestrial intelligence; Communication with Extraterrestrial Intelligence
связь с внеземными цивилизациями
astr.	communication with extra-terrestrial intelligence (CETI)
Gruzovik, polit.	CETI (communications with extraterrestrial intelligence)
Gruzovik, scient.	ETC (extraterrestrial communications)
tech.	communications with extraterrestrial intelligence; extraterrestrial communications