So the question is not what to do when debt gets near its limit, however high or low. It is how to prevent debt from getting near that limit in the first place, except in very extreme and unusual circumstances.
因此，问题并不在于当债务接近限额时怎么办，不管这个限额是高还是低。问题在于怎样在一开始防止债务接近这个限额（当然发生了极端或反常事件时另当别论）。而要解决这一问题，你需要的是财政规则。