gangbuster /ˈɡæŋˌbʌstə/ (gangbusters)

• 1.  

  PHRASE（习语） 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。