one's duty
Tom a accompli son devoir.
Tom has done his duty.
Il a senti que c'était son devoir d'y aller.
He felt that it was his duty to go.
He did his duty.
He does his duty.
Yanni écrit son devoir.
Yanni writes his homework.
Il a senti que c'était son devoir de partir.
He felt it was his duty to leave.
Khan, Kirk ne faisait que son devoir.
Khan, Kirk was just doing his duty.
— Star Trek II : La colère de Khan (1982)
Il sentit que c'était son devoir d'y aller.
He felt that it was his duty to go.