许多国家在经济衰退时采用凯恩斯主义，通过增加政府支出来刺激经济增长。

Many countries applied ___Keynesianism during the recession by boosting government spending to stimulate economic growth.

凯恩斯主义主张政府应通过财政政策刺激总需求来应对经济衰退。

___Keynesianism suggests governments should boost aggregate demand through fiscal policies during economic downturns.