gangbuster /ˈɡæŋˌbʌstə/

• 1. 

  PHRASE If something is going gangbusters, it is going strongly and doing very well. If someone comes on like gangbusters, they behave very energetically and sometimes aggressively. 势如破竹; 气势汹汹 [美国英语]

  例：

  The economy was still going gangbusters.

  经济状况依旧势如破竹。

  例：

  The team, who struggled early, came on like gangbusters at precisely the right time.

  刚开始还在挣扎的这支队伍，正好从那个时候开始气势汹汹地反攻。