比喻做事盲目，一个人去做什么事，大家都跟着去做to rush headlong into something

• 煤化工产业在发展中出现了一哄而上、重复建设的情况。

  In the development of the coal chemical industry, a situation of rushing headlong into action and redundant construction has emerged.

• 据李先生的妻子称，当时有五六个人一哄而上，殴打李先生。

  According to Mr Li's wife, five or six people rushed in and beat up Mr Li.