I wanted to make a difference in the world somehow, but I had no idea how to do that.

我想以某种方式在世界上有所作为，但我不知道该怎么做。

youdao

But I had no idea I would be charged for all this.

但是我不知道这些要收费。

youdao

But I had no idea at the funeral what we would find out later.

但是我在葬礼上一点都没料到我们之后会发现什么。

youdao

Louise, he's here. Now, when I got home,I had no idea, but Mama had all sortsof visitors.

VOA: standard.other

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

But I had no idea that they could -- in between doing our chores -- create so much havoc and misery.

CNN: Commentary: No time for hate

"I think I had a feeling this might become some cool tradition, but I had no idea we would still be doing it for 30 years, " said Wardlaw.

CNN: Five guys take same photo for 30 years

But I had no idea what the agent really did.

NEWYORKER: Testing, Testing