不清楚的用法和樣例：
例句
-
我不喜歡服用那些藥。因為那些藥傷我的眼睛，使我看不清楚東西。
I don't like taking those drugs, they make my eyes go out of focus and I can't see clearly. -
最糟糕的是我都不清楚他們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. -
咕噥低聲地嘟噥或者不清楚地說(shuō)話(huà)
A low grumble or indistinct utterance.
