Keynes supposed there was a “multiplier effect” from changes in investment spending.

凯恩斯认为，存在着一种来自投资开支改变的“乘数效应”。

" I think it does suggest the U.S. economy is moving forward, it's moving forward at a moderate pace, and the condition of U.S. businesses is such that they're increasing their investment spending, " said Stockton.

“我认为这表明美国经济正在进步，以温和的速度进步。美国的企业状况正在改善，投资收入正在增加。”