like: tổ sư
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Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
tổ sư * ☊ 
progenitor, founder, initiator, patron saint * ☊
[ tổ ] : (1) nest; (2) only; (3) group, team
[ sư ] : (1) division (military); (2) monk, priest