翻译BIG mining companies have suffered an astounding reversal of fortunes in the past few months.
问题描述：
翻译BIG mining companies have suffered an astounding reversal of fortunes in the past few months.
答
在过去的几个月中,BIG矿业公司遭受了前作未有的（原文可直译为：令人震惊的）财政危机（原文可直译为：财政转变,指完全改变、翻转）.