to give your support to a person, plan, idea, etc. for a second time; to state something as true again

The government yesterday reaffirmed its commitment to the current peace process. 政府昨天重申了对目前和平进程的承诺。

These events reaffirm my belief in the need for better information. 这些事情使我坚信，我们需要更加准确有效的信息。