英语语法分析

Some of the booms are based on hope.

有些繁荣是建立在希望之上。

Of course, booms aren't always followed by busts.

当然，繁荣之后并不总是萧条。

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。