当上扬的价格点燃了这一经济兴奋点，进而推动在该城市、其他城市甚至另一半球的价格上涨时，眼下的经济繁荣就在市场内和市场间见证了这种投机热。
The current boom has seen contagion within markets and across markets, as rising prices fuel popular excitement - and hence further price increases - in the same city, and then in other cities, even on the other side of the globe.