Place this clip directly after the mistaken line in your timeline, then follow it with the wrong answer game show buzz for a failed quiz beat, and let your on-screen correction text appear on that second hit.
關於此聲音
This is a 2.5-second voice clip of a high-pitched, Mickey-style cartoon voice saying the line um actually. The delivery feels prim, confident and slightly smug, like a correction that has been waiting for its moment. That sweet cartoon tone against a know-it-all interruption makes it read as funny and playful, not genuinely annoyed or argumentative.