like: thứ ba mơi
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Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
thứ ba mơi * ☊ 
thirtieth * ☊
[ thứ ] : (1) (ordinalizer); order, type, suit, kind; (2) thing, item
[ ba ] : (1) three, tri-; (2) father; (3) wave, ripple