• required by an obligationif you are duty-bound to do something, you must do it because it is your duty; a formal word.
موظف به انجام وظیفهملزمI feel that is my dutyI really oughy to . . . من وظیفم میدونم. . . /باید که. . . .احساس می کنم وظیفمه+ عکس و لینک