未必都是

• Chief executive officer is not necessarily someone who has had a lot of formal training . so , i doubt more schooling would help you climb up that ladder of success
  公司的首席执行官未必都是经过许多正规培训的人。所以，我认为接受更多的学校教育未必就能促使你在成功的阶梯上步步高升。
• A chief executive officer is not necessarily someone who has had a lot of formal training . so , i doubt more schooling would help you climb up that ladder of success
  公司的首席执行官未必都是经过许多正规培训的人。所以，我认为接受更多的学校教育未必就能促使你在成功的阶梯上步步高升。