like: ở bầu thì tròn, ở ống thì dài
Intermediate Level Advanced Level
Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
ở bầu thì tròn, ở ống thì dài * ☊ 
* ☊
[ ở ] : to live, be, stay, remain; in, at
[ bầu ] : (1) bottle, gourd; (2) [CL for moods, ambience, atmosphere]; (3) sphere, globe; (4) friend, pal; to become friendly; (5) to vote (for), elect
[ thì ] : (1) time; (2) then, as for, however, in that case, certainly, for sure