reasonable excuse

• 合理的辩解

reasonable excuse的用法和样例：

例句

1. The student was late and gave an invalid excuse.
   这学生迟到了，并且做了一个不得力的辩解。
2. I listened to his excuse with a mixture of amusement and disbelief.
   我怀着一种既好笑又不相信的复杂心情听了他的辩解。