like: khoanh vùng
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Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
khoanh vùng * ☊ 
delineate an area (for investigation) * ☊
[ vùng ] : (1) region, area; (2) to leave in a hurry
[ vùng ] : region