确认者

例句：

1. 1. Thescientist confirmed the theory with evidence.
   科学家用证据证实了这个理论。
2. 2. The policeman confirmedhis suspicions by checking the security footage.
   警察通过查看安全录像确认了他的怀疑。
3. 3.The teacher confirmed the student's answerby asking a few more questions.
   老师通过问几个问题来确认学生的答案。