Marble racing,   which involves videos of marbles being propelled around a racetrack, has also become a surprise hit.    Jelle’s Marble Runs,    founder of the “Marble League”, has seen subscribers to its YTB

channel jump by more than 100,000.



大理石赛车，其中包括大理石被推进赛道的视频，也成为一个意外的热门。“大理石联盟”创始人Jelle\'s Marble Runs旗下YouTube频道的用户数量激增了10万多人。