like: đài thiên văn
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Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
đài thiên văn * ☊ 
observatory * ☊
[ đài ] : tower, monument; radio, television station
[ thiên ] : (1) thousand; (2) partial (to), favorable, pro-(something); (3) heaven, sky, God, heavenly, divine, celestial; (4) (classifier for articles, novels, chapters); (5) to move, shift, change; (6) section, part, piece
[ văn ] : literature, letters, poetry; appearance, look