the most important people in a group, companies in an industry, etc اسم و صفت/ مهم ترین افراد در یک گروه، مهم ترین شرکت های صنعتی و. . . in the top tier ( of sth ) : It's in the top tier of private banks, which offer extraordinary services to wealthy clients ... [مشاهده متن کامل]
The nation's top - tier business schools exceeded their expected sales growth this year
