obligation/commitment/duty/function/responsibility.导航词义：义务，责任

1. obligation:n. 义务，责任.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。

2. commitment:n. 承诺；承诺之事.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。

3. duty:n. 责任，义务.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。

4. function:n. 职责，职能.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？

5. responsibility:n. 责任，义务.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。

全部

1·We have a moral obligation to protect the environment.

我们有道义责任保护环境。《牛津词典》

2·She did not feel under any obligation to tell him the truth.

她觉得没有义务告诉他实情。《牛津词典》

3·Governments have at least a moral obligation to answer these questions.

政府至少在道义上有责任回应这些问题。《牛津词典》

4·When teachers assign homework, students usually feel an obligation to do it.

老师布置家庭作业时，学生们通常感觉做作业是一种义务。《柯林斯英汉双解大词典》

5·South Carolina claimed the power to exempt its citizens from the obligation to obey federal law.

南卡罗来纳州宣称有权使其公民免除遵守联邦法律的义务。《柯林斯英汉双解大词典》

6·I hate it because it's an obligation disguised as an option.

我讨厌它，因为它看似选择，实为义务。

7·We do not have any legal or moral obligation to any physician.

我们对任何医生都没有任何法律或道义上的义务。

8·We have an obligation to make sure our communities are thriving.

我们有责任确保我们的社会繁荣昌盛。

9·The only obligation, the only tax that was due from me applied to everyone.

我唯一的义务，我唯一应缴的税，适用于每个人。

10·While there are incentives to do it, there's no legal obligation to report it.

尽管对这种做法有激励，但在法律上却没有义务进行报告。

义务

1·When teachers assign homework, students usually feel an obligation to do it.

老师布置家庭作业时，学生们通常感觉做作业是一种义务。《柯林斯英汉双解大词典》

2·South Carolina claimed the power to exempt its citizens from the obligation to obey federal law.

南卡罗来纳州宣称有权使其公民免除遵守联邦法律的义务。《柯林斯英汉双解大词典》

3·I hate it because it's an obligation disguised as an option.

我讨厌它，因为它看似选择，实为义务。

4·We do not have any legal or moral obligation to any physician.

我们对任何医生都没有任何法律或道义上的义务。

5·The only obligation, the only tax that was due from me applied to everyone.

我唯一的义务，我唯一应缴的税，适用于每个人。

职责

1·Wilsons of the world as the painful obligation to explain the racial facts of life to someone who hadn't quite learned them yet.

《威尔逊的世界》这部作品承担了艰难的职责，向那些尚未完全了解种族主义的人解释了生活中的种族歧视的事实。

2·Many were against it because of the high cost of treatment. But we believe that as doctors we have an obligation to find the appropriate treatment for these patients.

由于治疗费用昂贵，当时许多人反对，但我们相信，为这些病人提供合理治疗是我们作为医生应尽的职责。

3·The squirrel answered, I only fulfill my obligation to build up a reserve fund.

松鼠回答：我只是履行自己的职责来建立后备基金。

4·A series of amendments imposed mandatory interconnection, a new obligation for common carriers that would prove important in future.

一系列修正案要求各条线路强制连接，共同承运人的新职责在不久的将来证明会更加重要。

5·ITV, Britain's biggest commercial broadcaster, is pleading to be excused from its obligation to produce local news.

英国最大一家商业广播电视台—itv，如今正申请免除其报道当地新闻的职责。

债务

1·The discharged obligation must be secured by the property you repossess.

已清偿的债务必须以你收回的财产作为担保。

2·They normally have no effect on a firm's overall leverage: the borrowed cash and the obligation to repurchase the collateral balance each other out.

通常，回购对一家公司的总体财务杠杆没有影响，因为借来的现金资产与回购抵押品的债务是相互抵消的。

3·The secondary loan would cover the rest of the obligation and would in all likelihood be forgiven.

次级贷款将用于支付其余的债务，十有八九会被免除。

4·While stocks give owners certain rights, they do not carry obligation in case the company defaults or faces a lawsuit.

虽然股票让所有者拥有一些好处，但是在公司违约和面临官司的时候，所有者并不需要承担债务。

5·General Obligation bonds are backed by the full faith and credit of the issuer.

—普通债务债券由发行人的信用做保证。

(1)no obligation无义务

(1)moral obligation道义上的责任

(1)legal obligationn. 法律义务

(1)contractual obligation合同义务；契约责任

(1)without obligation不计价

(1)financial obligation债务；财政承担