godspeed

詳細解釋：

God.speed

n.（名詞）
Success or good fortune.
成功：成功、順利或好運

來源：
Middle English God spede (you) [may God prosper (you)]
中古英文 God spede (you) [上帝祝福你]
God [god] * see god
God [神] *參見 god
spede [third person sing. present subjunctive of] speden [to prosper] from Old English spôdan from spôd [success] * see speed
spede [] speden的現在虛擬語氣動詞第三人稱單數 [興盛，繁榮] 源自 古英文 spôdan 源自 spôd [成功，順利] *參見 speed