We need to analyse what went wrong.

我们需要分析是什么出了差错。

《牛津词典》

We should investigate what happened, what went wrong.

我们应该调查发生了什么事情，什么地方出了问题。

《柯林斯英汉双解大词典》

We've discovered what went wrong and are going to put it right.

我们已经发现错误所在并会将其纠正。

《柯林斯英汉双解大词典》

He then said the panel would examine documents, hear testimony and try to evaluate what happened, what went well, what went wrong and why.

VOA: standard.2009.11.25

What went wrong here? Well let's think about it for a second.

这儿出了什么错呢？,好，让我们想想。

麻省理工公开课 - 计算机科学及编程导论课程节选

I take it that we all agree that when we attempt to run the Cartesian argument in terms of the Morning Star and the Evening Star, it fails. But it's harder to say what went wrong?

我想大家都同意,当我们试图把卡氏论证,用到晨星和昏星的例子上来时,它行不通了,但是很难说我们哪里错了

耶鲁公开课 - 死亡课程节选

In looking for a fallen angel, you have to ask two questions: What went wrong?

FORBES: Book Review: The Little Book Of Big Profits From Small Stocks

There are too many options on that one point to know what went wrong.

FORBES: Why I Hate Travel Agencies

When bonds within families begin to fray, he seeks to understand what went wrong.

NEWYORKER: Little Strangers