Place this clip low in the mix under dialogue or captions as continuous fill, then finish with a short punctuation effect to close the scene. A ding sound effect works after it, or follow with a vine boom sound for a sudden contrast.
关于此声音
This is an 11-second clip labeled only as L2, a generic sound effect with no voice, quote or recognizable character in the facts provided. It feels plain and functional rather than funny or tense, a filler tone that sits in the background while something else happens on screen.