bandwagon

柯林斯词典

1. N-COUNT You can refer to an activity or movement that has suddenly become fashionable or popular as a bandwagon. (指活动或运动) 潮流
...the environmental bandwagon. …环保潮流。
2. N-COUNT If someone, especially a politician, jumps or climbs on the bandwagon, they become involved in an activity or movement because it is fashionable or likely to succeed and not because they are really interested in it. (尤指政客追赶的) 浪头[表不满]
In recent months many conservative politicians have jumped on the anti-immigrant bandwagon. 最近几个月，许多保守党政客赶上了反移民的浪头。

First one boy at school had that haircut and now they're all jumping on the bandwagon.
Now it seems that every single charity in town has jumped on the fundraising bandwagon.
All the kids began to collect and swap the cards , and it wasn't long before other companies got on the bandwagon.
Now we see another TV company climbing on the 'reality TV' bandwagon.
Coming after so many films recreating comic-book heroes , is this just another attempt to jump on the bandwagon?