adj.不明确的；模糊的；茫然的；犹豫不决的
At the back of his mind was the vague idea that he had met her before. 他隐隐约约地觉得以前曾经见过她。
She is so vague that I can never understand what she is trying to say. 她说话含含糊糊，我怎么也听不明白她想说些什么。
His vague ideas crystallized into a definite plan. 他那些模糊的想法变成了一个明确的计划。
I'm quite vague about what happened. 我对发生的事很不了解。
His vague reply disconcerted us completely. 他那含糊的回答弄得我们很为难。
