burnt his boats

• v. 破釜沉舟(干到底；不留后路)

burnt his boats的用法和样例：

例句

1. Jim was a good wrestler but a poor boxer. He burned his boats by letting Bob choose how they would fight.
   吉姆精于摔跤而不善于拳击。他自断退路，让鲍勃选择他们打斗方式。