duty

義務

Ex

  • on duty:勤務中の、当直の(警察官、公務員、医者などでよく使う)
    She found an on-duty police officer and asked him for help.
  • off duty:勤務外の、非番の
    The doctor said he couldn’T give me advice because he was off duty.
  • She did her duties well.
  • duty-free:免税

Reference source

  • https://talking-english.net/duty-task/