like: cóc vái trời
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Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
cóc vái trời * ☊ 
a toad praying to heaven, useless thing to do * ☊
[ cóc ] : (1) toad; (2) (slang for không)
[ vái ] : to greet with clasped hands
[ trời ] : heaven, sky; area, region, sphere
[ trời ] : heaven