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Từ điển WordNet v3.1 - WordNet Dictionary
double star
a system of two stars that revolve around each other under their mutual gravitation • Syn: binary star, binary • Hypernyms: star • Instance Hyponyms: Aldebaran, Algol, Alpha Centauri, Rigil Kent, Rigil, Altair, Antares, Epsilon Aurigae, Procyon, Rigel, Beta Orionis, Sirius, Dog Star, Canicula, Sothis, Vega
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