Place it at the start of a fairground sequence, before the action peaks, then follow it with a sharp air horn as the ride reaches its fastest moment and a bell ding when a game or stall wins attention.
关于此声音
This eight-second clip is a motor sound, the kind of steady engine noise heard around a fairground ride, with a mechanical hum running through it. It feels lively and restless, like standing beside a machine about to move, and it works as a burst of noisy, carnival energy rather than a quiet background detail.