If you have an eye for service, then you always think helping people is your duty! If you see it, then you offer your service. It's the right thing to do!
This word consists of the on'yomi reading for 役 and the kun'yomi reading for 目. You've learned them both so you should be able to read this word too!
Making dinner every day is Dad's duty.
My role as a dog model is more important than my role as a pet dog.
My brother’s duty now is to make money for the family in place of my father.