It was the blind leading the blind.

这可真是瞎子给盲人引路。

It's like the blind leading the blind.

现在的现象是以盲引导盲。

He said he knew the way and would lead us there, but he didn't; it was a case of the blind leading the blind.

他说他认识路并愿意带我们去那儿，但是他事实上并不认识路，完全是盲人教瞎子。

This might seem like the blind leading the blind - and it's hard to imagine parents at an Open Day being impressed by a university offering 5 zero contact hours.

这看起来就像外行指导外行一样，很难想象父母们会在校园开放日，对一所提供零面授课时的大学留下深刻印象。

If you don't know where you're going, and they don't know where they're going, we have a classic case of the blind leading the blind; both of you will end-up in a ditch.

如果你不知道你的人生方向在哪儿，他也不知道他的人生方向在哪儿，那么这就是问道于盲的经典案例，你们会一同陷入沟壑。