请问reason,excuse,cause,explanation都有理由的意思,用法上有什么区别?

请问reason,excuse,cause,explanation都有理由的意思,用法上有什么区别? reason,cause 和 excuse 有什么区别? reason cause excuse 与explanation 区别? reason.purpose.cause.excuse的区别 reason,cause 和 excuse 有什么区别? excuse, reason, cause, make用法及解释及区分 请问这个英语reason是什么意思? excuse sb for doing 可以省略吗 请问excuse sb have reason和have reasons是不是都行?这里reason可不可数有没有什么讲究?excuse呢?请不吝赐教. EXCUSe Excuse excuse excuse, Excuse EXCUSe excuse There is no reason,no excuse,there is only one shot killed system 是什么意 reason/cause/excuse/source的区别不要只是字典里的解释,并能让人理解!