The system is unable to log you on.
这个系统无法让你登录。
She had shown herself unable to deal with money.
她所做的事已表明她不善理财。
The company was unable to match his current salary.
当时公司付不起和他现在相同的'工资。
The police were unable to gain entrance to the house.
警方怎么也进不去这栋房子。
The company has been unable to fill the post.
公司的这个空缺还未能填补。