Mr Krugman showed that target zones, if credible, could ameliorate this problem, by converting speculators into stabilisers.

克鲁格曼先生表明，目标区域如果可信，可以通过将投机者转变为稳定器来改善这个问题。

Even without the scale of spending unleashed when covid-19 struck, recessions lead to higher deficits as tax revenues fall and automatic stabilisers such as unemployment insurance rise.

即使没有在 covid-19 来袭时释放的支出规模，随着税收下降和失业保险等自动稳定器的增加， 经济衰退也会导致更高的赤字。