Place this clip right after the line or reveal it is reacting to, then follow it with the oh my god wow sound button for a bigger second reaction, or precede it with sudden suspense to build up to the stunned reply in edits.
关于此声音
A short 2.7-second voice clip of someone blurting out 'Excuse me, whaaaaat?' with the what dragged out in disbelief. It lands as pure stunned confusion, funny and a little incredulous, the kind of over-the-top reaction that turns an ordinary surprising moment into a joke all by itself for listeners.