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/