我在九点钟时看见她在办公室里，所以她不可能在八点五十分时已经离开。

我在九点钟时看见她在办公室里，所以她不可能在八点五十分时已经离开。的英文翻译

基本释义

• I found her in the office at nine o'clock,and so she could not have checked out at ten minutes to nine.