bandwagon

流行，时尚；乐队花车英释中释nYou can refer to an activity or movement that has suddenly become fashionable or popular as a bandwagon

1 on the bandwagon,[口语](选举中)站在有胜利希望的一边，支持占优势的一方；看风使舵，随大流

2 jump on the bandwagon,站在某人一边；赶浪头；一窝蜂做某事，跟随潮流

1 ...the environmental bandwagon..…环保潮流。