like: nước nặng
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Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
nước nặng * ☊ 
heavy water * ☊
[ nước ] : country, nation, state; water, liquid (for drinking); gum(s) (flesh surrounding teeth)
[ nặng ] : (1) heavy, weighty, serious, ponderous; (2) low-constricted tone
[ nước ] : liquid
[ nước ] : water
[ nặng ] : heavy