但是在一些情况下，现价的上升反而会引发对未来价格的更加高度的预期，这样导致了泡沫问题。
But in some circumstances the increase in the current price leads to an even higher expectation of future price increases, resulting in a bubble.
这样的情况同样曾发生于日本，这种经济增长模式导致将着力点放到国内经济上，由此带来房地产泡沫和银行的坏账问题。
As also happened in Japan, that growth model has led to the buildup of stress points in the domestic economy: a bubble in the real-estate sector and bad loans in the Banks.
不断的循环怪圈导致泡沫的产生：持续上涨的价格诱发人们不断看涨的预期心理，这样更加刺激了购买行为，于是价格进一步上涨——一直到市场崩盘。
Bubbles are caused by feedback loops: rising speculative prices encourage optimism, which encourages more buying, and hence further speculative price increases - until the crash comes.
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