like: vòng bi
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Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
vòng bi * ☊ 
ball-bearing * ☊
[ vòng ] : circle, ring, round
[ bi ] : (1) tombstone, slab, stele; (2) marble (toy), pellet; (3) sad, sorrowful
[ vòng ] : ring