不清楚

• dimness
• lack of focus
• mistiness
• indistinction

例句

1. 我不喜欢服用那些药。因为那些药伤我的眼睛，使我看不清楚东西。
   I don't like taking those drugs, they make my eyes go out of focus and I can't see clearly.
2. 最糟糕的是我都不清楚他们是否收到了我的支票。
   The worst of it is that I can't even be sure if they received my cheque.
3. 咕哝低声地嘟哝或者不清楚地说话
   A low grumble or indistinct utterance.

短语

• 不得要领
• 茫然
• 一无所知
• 大惑不解
• 没谱儿