美国经济正逐步走向繁荣,第二季度的年均国内生产总值增长率达到了3.3%,而且生产率开始迅猛增长。科技进步和生产力的提高是衡量生活标准改善的决定性因素,因此,生产力繁荣发展的迹象就显得尤为重要。从20世纪70年代后半期到80年代,经济发展进入低谷,生产力发展速度极低,经过这 The U.S. economy is gradually moving toward prosperity, with an average annual GDP growth rate of 3.3% in the second quarter, and productivity growth has started to skyrocket. Progress in science and technology and improvement of productivity are the decisive factors in measuring the improvement of living standards. Therefore, signs of a productive and prosperous development are particularly important. From the latter half of the 1970s to the 1980s, economic development entered the trough, and the rate of development of productive forces was extremely low. After this