Everyone is born for a cause. Every walk on the ground, he in life to do duty.

每个人都是为了某种事业诞生的。每个在地上行走的人，都有他在生活中应尽的职责。

youdao

What time do you go off duty?

你什么时候下班？

《牛津词典》

The soldiers all used to do a six-month tour of duty in Northern Ireland.

士兵过去都要在北爱尔兰服役六个月。

《牛津词典》

Lincoln agreed to do so. He felt it was his duty to go.

VOA: special.2009.11.12

Some others If I might have a right to X, do you have a duty to fulfill that for me?

其他的像如果我有某项权利，你有没有义务帮我实现？

普林斯顿公开课 - 人性课程节选

Would it be just to torture the suspect to get the information or do you say no, there is a categorical moral duty of respect for individual rights?

为了拿到情报而对他严刑拷打，是否合理,抑或你不赞同，你认为有尊重个人权利的绝对道德责任？

耶鲁公开课 - 公正课程节选

In Mr Flusfeder's hands, external barriers do duty for inner ones as the lines between good and bad, sane and crazy, blur and disappear.

ECONOMIST: Lost in Warsaw

And all of you, our troops and families, you do your duty and you do it without complaint.

WHITEHOUSE: The First Lady Announces New Funding for Military Families

We are not an imperial power, but we were called upon to do imperial duty.

NPR: The War on Terror, Five Years Later