translation.en: We had deflation during the Depression, but that was collapse of the money supply, collapse of consumer confidence, a completely different phenomena.
translation.zh: 我们在经济萧条的时候会经历价格下降，通货紧缩， 但是那是由于货币的供应崩溃， 消费者信心的崩溃，一个完全不同的现象。