＜簡單製作小型電單車！＞ - 鍾意請廣傳/Please SHARE
//Simple Science Makes So Much Fun!// 好玩啊！ https://www.youtube.com/watch?v=J9b0J29OzAU Source: (AmazingScience 君 ＠YouTube) #science #engine #racing #fun #life “The best way to cheer yourself is to try to cheer someone else up” - Mark Twain