to break the back of the beast
01
to manage to do something that is extremely difficult or challenging
![to [break] the back of the beast definition and meaning](https://cdn.langeek.co/photo/43038/original/?type=jpeg "to [break] the back of the beast definition and meaning")
例子
Getting the first permit broke the back of the beast for the whole project.
to manage to do something that is extremely difficult or challenging
