(以某事为理由)use as an excuse;on the pretext of;on the excuse of:那淘气的男孩借口头疼, 离开了教室。The naughty boy left the classroom on the plea of a headache.一个人不应该借口缺乏经验来为其错误辩解。One should not plead inexperience in excuse of his mistake.
一楼的回答已经很不错了,可以采纳