dispel
verb [ T ] uk/dɪˈspel/ us/dɪˈspel/ -ll-
消除（恐惧）；扫除（疑虑）；打消（错误念头）
to remove fears, doubts, and false ideas, usually by proving them wrong or unnecessary
I'd like to start the speech by dispelling a few rumours that have been spreading recently. 我想在演讲的开头先澄清一些近期流传的谣言。