1、单词有confirm确认， firmer坚硬的，坚固的， firmness坚固，例如：

2、All telephone reservations must be confirmed in writing.所有的电话预订必须以书面形式确认。

3、Flights should be confirmed 48 hours before departure.航班应在起飞前48小时予以确认。

4、It has been confirmed that the meeting will take place next week.已经确定会议将于下个星期召开。