an idea or activity, especially in politics or business, that suddenly becomes very popular or fashionable, so that a lot of people want to be involved in it (尤指政治上或商业上的)时尚,浪潮,声势浩大的活动
His recent poll victory could start an ultra-nationalist bandwagon rolling. 他在最近民意测验中的胜利可能会掀起一波极端民族主义的浪潮。
jump on/climb on/join the bandwagon:
Every business was trying to jump on the ‘dot-com' bandwagon. 每个企业都在试图追赶潮流建立“网上公司”。