bandwagon
/ˈbændˌwægən/noun
1
- (especially formerly) a wagon used for carrying a band in a parade or procession（尤指从前游行队伍中的）乐队彩车。
2
- usu. in sing. a particular activity or cause that has suddenly become fashionable or popular时尚活动; 热潮：
the Green bandwagon provided a fillip for many companies tackling environmental problems.
绿色浪潮对许多应付环境问题的公司产生了刺激作用。
短语
jump（或climb）on the bandwagon
- join others in doing or supporting something fashionable or likely to be successful赶时髦, 赶浪头。