Riding om the <a href="https://www.electric-concepts.com/product/foffa-boost-%D7%90%D7%95%D7%A4%D7%A0%D7%99%D7%99%D7%9D-%D7%97%D7%A9%D7%9E%D7%9C%D7%99%D7%99%D7%9D/" rel="nofollow"> Foffa Boost </a> single speed ebike, the engine makes this soft sound you can hardly hear it, unless you put a microphone next to the engine.<br/>電動自行車引擎 - 電動自行車<br/>聲道：2<br/>類型：wav<br/>zehus、riding、motor、outdoor、ride、ectlv、electric、bicycle、ebike、wheel<br/>zehus、騎術、發動機、戶外、騎、ectlv、電動、自行車、電動自行車、輪<br/>資料來源：freesound ( https://freesound.org )