They reminded him of his contractual obligations.

To pay taxes is an obligation.

纳税是一义务.

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

老师布置作业时，学生通常认为完成作业是一种义务。

You're under obligation to care her.

你有义务照顾她. responsibility指 “由于法律、职业或道德等的要求而应尽的责任”,含有 “ 法津上对后果负责任”的意味,如:

His social obligation compels him to make a round of visits.

他的社会职责使得他不得不进行一系列访问.

The obligation was thrust on him.

这责任是强加给他的.

to fulfil your legal/professional/financial obligations

履行法律 / 职业 / 财务责任

They dispensed her from obligation.

他们免除了她的义务.

You are under no obligation to buy anything.

你不必非买什么东西不可。

We have a moral obligation to protect the environment.

我们有道义责任保护环境。

Ministers are under no obligation to follow the committee's recommendations.

部长不必非得听从委员会的建议。

Our school should be the security organs have completed the requirements of this obligation.

我们的学校应该是公安机关已完成的要求,这一义务.

I don't want people coming to see me out of a sense of obligation .

我不想让别人迫于无奈来看我。

If you are selling your property, why not call us for a free valuation without obligation?...

如果您打算出售房产，何不打电话让我们作免费估价呢？

We will send you an estimate for the work without obligation (= you do not have to accept it) .

我们将寄上工程估算，仅供参考。

The United States will do that which is necessary to meet its obligations to its own citizens...

美国将为自己的公民尽其应尽的义务。

He absolved me from further obligation.

他解除了我更多的责任.

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

她觉得没有义务告诉他实情。

Every player is under an obligation to keep the rules.

每个选手都必须遵守这些规则.

He was relieved of the obligation to pay his debt.

他被免除了还债的义务。

These are general obligations, whatever they might be.

那些是普通义务债券, 而不管它们是什么样子.