摘要
The year 2019 has witnessed the drastic slowdown of global economic and trade growth,steep decline of foreign direct investment,continuing slowdown of growth rate of major developed economies and increasing downward pressure on emerging economies.The unilateral and protectionist policies adopted by the Trump administration of the United States have led the world on a track of slower growth;in the meantime,monetary and fiscal policies designed by various countries,especially developed economies,have become less effective;and insufficient global aggregate demand has also severely jeopardized world economic growth.