Of course, booms aren't always followed by busts—we've certainly seen times when local economies expanded rapidly for a while and then went back to a normal pace of growth.

当然，行业繁荣并不总是以破产告终——地方经济在一段时间内迅速扩张，然后又回到正常增长速度的情况我们已经见过很多次了。