like: cứ thoải mái
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Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
cứ thoải mái * ☊ 
to feel free to do sth * ☊
[ cứ ] : (1) to continue to, go on, keep on (doing something); (2) evidence, proof; (3) still
[ mái ] : (1) roof; (2) (of a bird) female