godspeed
used to wish someone good luck when they are setting out on a journey
祝成功;祝幸運;祝一路平安

這里的speed是其古意，表成功或繁榮。

godspeed=May God speed (you)，特別是被祝福之人要開始一段旅行或開拓事業(yè)時。因成功之人多充實且忙碌，所以speed后來有了快速之意。

"Farewell and godspeed," the general said, ending his speech, and then it was time to go.

“再見了，祝你一路順風(fēng)，”將軍這樣說道，結(jié)束了他的演講，然后離開的時候到了。