The Lion and the Mouse

A Lion who had caught a Mouse was about to kill him, when the Mouse said:

“If you will spare my life, I will do as much for you some day.”

The Lion, good-naturedly let him go. It happened shortly afterwards that the Lion was caught by some hunters and bound with cords. The Mouse, passing that way, and seeing that his benefactor¹ was helpless, gnawed² off his tail.

1 benefactor   

n. 恩人，行善的人，捐助人

参考例句：

• The chieftain of that country is disguised as a benefactor this time. 那个国家的首领这一次伪装出一副施恩者的姿态。
• The first thing I did, was to recompense my original benefactor, my good old captain. 我所做的第一件事, 就是报答我那最初的恩人, 那位好心的老船长。

2 gnawed   

咬( gnaw的过去式和过去分词 )； （长时间） 折磨某人； （使）苦恼； （长时间）危害某事物

参考例句：

• His attitude towards her gnawed away at her confidence. 他对她的态度一直在削弱她的自尊心。
• The root of this dead tree has been gnawed away by ants. 这棵死树根被蚂蚁唼了。