大たい業ぎょう

noun

great deed; great enterprise; massive undertaking

Refers to a large-scale, ambitious, or historically significant project or achievement. Often used in formal or literary contexts.

• このダム建けん設せつは国こっ家かの大たい業ぎょうだ。

  This dam construction is a great national enterprise.

• 彼かれは人じん類るいの大たい業ぎょうに貢こう献けんした。

  He contributed to a great undertaking for humanity.