do my duty

• vi. 尽职(尽本分；尽义务)

do my duty的用法和样例：

例句

1. I felt bad that I had not done my duty.
   我很难过，我没有履行自己的职责。
2. As your father, I can set you free, but in my capacity as a king of the country I must do my duty and punish you.
   作为你父亲，我可以释放你，但作为一个国王，我必须履行我的职责处罚你。