It really was crowded and I have no idea why.

那里真是拥挤不堪，而我不清楚为何会这样。

youdao

But they had no idea why anyone would want it.

但是他们并不知道为什么有人想用电脑。

youdao

This is the most obvious choice, though sadly most people would have no idea why.

这是最显而易见的选择，可惜的是大多数人肯定不知道为什么。

youdao

Robert Fulton would say for the rest of his life that he had no idea why he said such a thing.

VOA: special.2009.01.14

In fact, I do this as well, I mean I have water with me and I have no idea why because I'm not particularly dehydrated.

事实上,我也整天带着水壶,我是说我随身带水,但又不知道为什么要带,因为我并没有特别的脱水症状

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

This is the strongest memory I have, and I remembered a) that I didn't learn them, and that was really bad because it kept coming up, but the other thing I remember is that I had no idea why they were important. I didn't really understand what any of these molecules were.

这就是我最深刻的记忆，我记得我并没有学好，这十分不好，因为之后它们总是不断出现,但另外的事情我记得,是我完全没有概念为什么。

麻省理工公开课 - 化学原理课程节选

Publicly Nixon was suggesting he had no idea why the South Vietnamese withdrew from the talks.

BBC: The Lyndon Johnson tapes: Richard Nixon's 'treason'

Councillor Adrian Cochrane-Watson said the the families involved had no idea why they have been targeted.

BBC: Three vehicles damaged in Antrim arson attacks

And I have no idea why I chose to listen to that first voice.

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