Several cars went off the rails.

有几节火车车厢出轨了。

《牛津词典》

It went off the rails when people started to just make new stuff up.

然而当人们开始只关注创造新东西时，它们开始偏离轨道。

youdao

The train went off the rails and fell into the vally, killing everyone on board.

火车出了轨，掉到峡谷下，车上无一人幸免于难。

youdao

In August 2004 the company's forecast went off the rails and MatchNet had an unexpected loss.

FORBES: Magazine Article

But when it devised the financial structure of the project, the government went off the rails.

ECONOMIST: Project finance in Taiwan

Near the end of 1999, the Federal Reserve went off the rails again under Fed Chairman Alan Greenspan.

FORBES: The Mystery Of Income Inequality Broken Down To One Simple Chart