grub out

例句：

1. 1. The farmer gnawed at the roots of the tree to dig it up.
   农民啃掉了树根，把它挖了出来。
2. 2.The old book was so worn out that it could not be read anymore.
   那本旧书磨损得太厉害了，无法再阅读了。
3. 3. The team worked hard to scrape out a victory in the final game.
   团队努力工作，在最后一场比赛中争取到了胜利。