Keynesian macroeconomic theory

例句：

1. 1.The economists argue that the Keynesian approach to fiscal policy is effective in combating recessions.
   经济学家们认为，凯恩斯主义财政政策在对抗经济衰退方面是有效的。
2. 2. The Keynesian model suggests that government spending can stimulate demand and boost economic growth.
   凯恩斯模型表明，政府支出可以刺激需求并促进经济增长。
3. 3. The Keynesian theory of unemployment emphasizes the role of aggregate demand in determining the level of unemployment.
   凯恩斯失业理论强调总需求在决定失业率水平中的作用。