like: dài khoảng 12 ngàn dặm
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exact:
VNEN 
dài khoảng 12 ngàn dặm * ☊ 
approx. 12,000 miles long * ☊
[ dài ] : long; to last (time)
[ khoảng ] : approximately, around; distance
[ ngàn ] : (1) thousand; (2) mountains and forests
[ dài ] : long
[ khoảng ] : approximately
[ khoảng ] : roughly