It is one's duty to pay taxes.

纳税是每一个人应尽的义务。

youdao

One must do one's duty.

人人必须尽责。

youdao

She's always on about doing one's duty.

她总是滔滔不绝地谈尽义务。

youdao

In a less dire example, it's simply annoying to have one's phone reserved for video duty.

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"I think the governor has one duty right now and that's the duty to resign, " he said.

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The next morning Sorrel persuaded doctors to let Josie drink, but then one doc ordered heavy-duty narcotics against another's instructions.

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