like: nồng cốt
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Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
nồng cốt * ☊ 
foundation * ☊
[ nồng ] : (of smell, scent) strong, (of feeling) strong, ardent, warm, intense
[ cốt ] : (1) to aim at, be essential, essence; (2) bone, framework