off the rails 失常的，偏离正轨的（成语）
英文释义
Describing a business or project that is out of control and likely to fail. (NOTE: "rails" refers to a railroad track)
例句
Because there were no controls over expenses, the new company was off the rails within a few months and investors were quite worried.
由于没有控制费用，新公司没过几个月就偏离了正轨，投资者非常焦虑。