Taken from a zip from a pencil case, an simple reverb effect was added to make it sounds like it happens on the street. It could be compared as a motorbike engine (as weird as it may sound), but very high-pitched.
VALENTIN_Alexis_2015_2016_motorbike-engine.wav
聲道：2
類型：wav
road、motorcycle、traffic、street、echo、motorbike、lonely
路、摩托車、交通、街、迴聲、摩托車、孤獨
資料來源：freesound ( https://freesound.org )