Today,it is happening every few months. The replacements are increasingly young and inexperienced.

VOA: standard.2010.05.20

We don't want you to feel inadequate when you're simply inexperienced.

我们不想你们仅仅因为缺乏经验,而觉得自己不够格。

麻省理工公开课 - 计算机科学及编程导论课程节选

"It was an inexperienced, immature driver who felt that he was invincible;

VOA: standard.2010.06.24