Harris and others figure a Japanese economic bounce and lower energy prices will boost activity by then, and it is certainly possible that will happen.

哈里斯和其他人预计日本经济的反弹和能源价格的下跌将有利于刺激第四季度的经济活力，这种预测很有可能成为现实。

youdao

He said, "We continue to expect economic activity to bottom out, then to turn up later this year."

VOA: special.2009.05.08

So working with the government of Morocco,we are hoping to really help to see blossom a lot more economic activity at the lower levels that will then from the bottom-up build prosperity,"

VOA: standard.2009.11.03

The entire constitutionality of the mandate rests on the above question because if it is economic activity then there appears to be no tangible difference between the individual mandate and the restrictions in Wickard.

FORBES: The Economics of the Mandate Don't Matter: It's Constitutional

Note that this means that if there were no government sector, then the job of driving economic activity would be left to investment alone.

FORBES: Why the Private Sector NEEDS the Government to Spend Money

Then have a look at the economic activity that they support.

FORBES: Links 31 March: Is Bitcoin Doing Well Or Is It Just A Bubble?