It's hard to explain exactly what it is, It's not getting lost.

很难解释它到底是什么，不是迷途。

普林斯顿公开课 - 人性课程节选

It's hard to explain. I'm not an expert, so I just...

这很难解释。我不是一个专家，所以我只能……

英国的啤酒 - SpeakingMax英语口语达人

It's very hard to see how you explain that in physicalist terms.

都很难运用物理主义术语加以解释

耶鲁公开课 - 死亡课程节选

"It's hard to explain how it is to be sitting with a bunch of people that you know they've been through the same thing you've been through, " George said.

CNN: WW II vet held in Nazi slave camp breaks silence: 'Let it be known'

Markets are supposed to be rational, but it's hard to explain this one.

FORBES: Penalty box

It's hard to explain having played so well last year.

BBC: Scarlets going backwards - Evans