So the central bank would print up notes and give it to the government and the government would start spending it on the war.

于是，中央银行会印制钞票,并将其交到政府手中,之后政府开始,将其用到战争开销中。

耶鲁公开课 - 金融市场课程节选

This posits that there is a tradeoff between economic growth and inflation: that to gin up an economy a central bank must print more money (which eventually leads to more inflation), and that to bring inflation down a central bank must tighten money (which slows down the economy).

FORBES: Unilateral Disarmament

How much lower can yields fall while globally central banks print money at 5% to 10% annual rates and economies grow at 2% rates?

FORBES: Not Bonds, Books

As central banks print money and increase supply, currencies become devalued.

FORBES: Move up http://i.forbesimg.com t Move down