史し上じょうに

adverb

in history; historically

Used to emphasize that something is unprecedented or notable in the historical record. Often appears in formal or written contexts.

• 史し上じょうに残のこる大だい発はっ見けんだった。

  It was a great discovery that will go down in history.

• この事じ件けんは史し上じょうに例れいを見みない。

  This incident is unprecedented in history.