a ballpark figure   عددی که نزدیک به رقم واقعی است/ برآورد تقریبی   Fifty is a ball-park figure. It’s close to our class size They are working on a ballpark figure of 1 billion, but even this may not be enough  

a ballpark figure

 

عددی که نزدیک به رقم واقعی است/ برآورد تقریبی

 

Fifty is a ball-park figure. It’s close to our class size

They are working on a ballpark figure of 1 billion, but even this may not be enough