mismanagement

n. 管理不善,处理不当

And who brought us to such a pass? You did, by sheer mismanagement.

谁使我们陷入这样的困境？就是你，纯粹由于你管理不善。

By sheer mismanagement you brought us to such a pass.

完全是你处理不当，才把事情弄得这样糟。