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ACROSS
1)  (astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day
2)  the cardinal number that is the sum of one and one and one
3)  a rapid automatic system to detect plastic explosives in passengers' luggage using x-ray technology and computers; designed for use in airports


DOWN
1)  move fast
2)  a resource
3)  a female person who has the same parents as another person

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