duty
单词辨析：
指法规、合同等规定的该做或不该做的事，含强制之意；也指因诺言、誓言等而必须要做的事。
Employees are under no obligation to buy any products from their own company.
员工没有义务购买本公司生产的产品。
They have to fulfil the obligations imposed on them by the treaties.
他们不得不履行条约规定的义务。
He kept the secret for her out of a sense of obligation.
他出于责任感而替她保守秘密。
In fact, greater resources are needed to meet these obligations.
事实上，履行这些义务需要更多的财力。
指会去做某事的保证或保证去做的事情。
The company made a commitment to quality.
该公司对质量作出承诺。
88 percent of respondents said marriage should be a lifelong commit-ment.
88%的受访者表示婚姻应该是一辈子的承诺。
She's got a lot of commitments.
她作出了多项承诺。
指在道义或法律上应尽的本分，强调自觉性；也指工作职责，此时通常用复数。
He feels it is his duty to help his neighbors.
他觉得帮助邻居是他的责任。
She was brought up to have a strong sense of moral duty.
她从小就被教育要有强烈的道德责任感。
Never forget your duty to your motherland.
切勿忘记你对祖国应尽的义务。
His duties included sweeping the lawn.
他的职责包括清理草坪。
指某人的工作职责或某事物的职能或功用。
Are you ready to perform your functions in your new job?
你准备好在新的工作岗位上履行职责了吗？
What's the function of this newly founded department?
这个新成立的部门的职能是什么？
指管控某人或某事物的责任、对不良事件所负的责任或工作职责，强调对他人的责任。
Generally speaking, a promotion means higher salary and more responsibility.
一般而言，升职意味着更多的薪水和更大的责任。
It's your responsibility to inform them of any changes.
如有任何变动，你有责任通知他们。
Who should accept full responsibility for the political crisis?
谁应该为这场政治危机负全责？
Her responsibilities include handing out brochures and answering the phone.
她的职责包括分发宣传册和接听电话。
相关例句：
Four officers were told to go off duty and rest at home
四名官员已经被通知停职在家休整。
I consider it my duty to write to you and thank you.
我认为写信向你表达谢意是我的责任。
The first duty of any government must be to protect the interests of the taxpayers
任何政府的首要职责都必须是保护纳税人的利益。
He was relieved of his duties as presidential adviser.
他被撤销了总统顾问一职。
It is everybody's duty to take good care of public property.
爱护公物，人人有责。
My duty is to look after the animals.
我的责任就是照看这些动物。