余よ人じんをもって代かえがたい

expression

hard to replace (with another person); irreplaceable (person)

Fixed expression meaning that a particular person is so valuable or unique that no one else can take their place. Often used in formal or written contexts to praise someone's abilities or character.

• 彼かれは余よ人じんをもって代かえがたい人じん材ざいだ。

  He is a talent who is hard to replace with anyone else.

• このプロジェクトには、余よ人じんをもって代かえがたい専せん門もん家かが必ひつ要ようだ。

  This project requires an expert who is irreplaceable.