contractual obligation

基本解释

Cowell has offered to ignore her contractual obligation to take part in the tour.
考威尔称苏珊可以不履行合同约定的参加巡演的义务。
Nietzsche acknowledges that his inquiries into indebtedness and contractual obligation have so far ignored the moralization of these concepts.
尼采认识到，他对债务和合同,义务到目前为止的追索,是忽略了这些概念的道德化。
Support for some older service versions may be dropped when the contractual obligation completes or when the need to support the service ends.
当合约义务完成时或不再需要支持服务时，可以终止对旧服务版本的支持。

Many disclaimers are, in effect, seeking to impose a contractual obligation unilaterally, and thus are probably unenforceable.
ECONOMIST: Legal disclaimers
And these are not unique and they are part of the contractual obligation.
NPR: Marine Recall Prompts Questions over Iraq Stress
There is a contractual obligation that the student, the parent and the high school guidance counselor are bound to.
FORBES: College Admission's Best Kept Secret