Money circulates in the economy.

货币在经济领域里流通。

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During a depression money circulates slowly.

在商业萧条时期，货币流通滞缓。

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In time of prosperity, money circulates quickly.

在繁荣的时候，资金流通得很快。

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And all that money circulates in the economy and it makes us all grow.

WHITEHOUSE: Remarks by the President at a Campaign Event

Integrated horticultural infrastructure and a national smart grid have three important things in common: They can begin to have positive effects at a small level and expand to large scale, they are long term, and they produce jobs with money that circulates within our economy.

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The quantity theory of money holds that the money supply, multiplied by the rate at which it circulates (called velocity), equals nominal income.

ECONOMIST: Economics focus