不胜任的

例句：

1. 1. He is unfit for the job because he lacks the necessary skills.
   他不适合这份工作，因为他缺乏必要的技能。
2. 2. The new manager has been unfit for the position for several months.
   新任经理几个月来一直不适合这个职位。
3. 3. The candidate was unfit for the role because of his poor performance in the interview.
   这位候选人因为面试中表现不佳而不适合这个角色。