s not clearly understood or expressed
a not precisely limited, determined, or distinguished
s lacking clarity or distinctness
a. 含糊的, 不清楚的, 茫然的
1. The instructions were too vague for me to understand.
这些说明对我来说太模糊了，无法理解。
2. She gave a vague answer to my question.
她对我的问题给出了模糊的回答。
3. His memory of the event is quite vague.
他对那件事情的记忆相当模糊。