我对酒店的位置有一个模糊的概念。

I have a ___vague idea of where the hotel is.

他关于方向的描述有点模糊不清。

He was a bit ___vague about directions.

这次会议甚至没有给我一个关于我想做什么的模糊想法。

The conference didn't give me even a ___vague idea of what I want to do.