Both parties did not fulfill obligations in the contract.

双方当事人没有履行合同中的义务。

youdao

Here is what I've found: many people don't hold themselves to a high standard and, therefore, go back on their word or don't fulfill obligations they say they'll fulfill.

这是我发现的许多事情：许多人并没有以高标准来要求自己，所以他们总是不停地食言或并没有履行他们承诺履行的义务。

youdao

However, the Contractor may retain on Site, during the Defects Notification Period, such goods as are required for the Contractor to fulfill obligations under the Contract.

但在缺陷通知期限内，承包商可在现场保留其根据合同完成规定义务所需要的此类货物。

youdao

Rather it is demanding that Israel fulfill its obligations under the internationally-backed "Roadmap" peace plan.

VOA: standard.2009.08.21

Incidentally, you also have human rights, but these are only fulfill to the extent that other people understand their own primary obligations first.

顺便说一句，你也有人权，但要行使这些权利必须,先使他人明确他们自己的首要责任。

普林斯顿公开课 - 人性课程节选

If Israel doesn't fulfill her obligations by obeying God's Torah, his instructions, and living in accordance with his will, as expressed in the laws and instructions, then God will not fulfill his obligation of protection and blessing towards Israel.

如果犹太人不履行自己的责任,遵守上帝的教训和旨意，按照他的意愿生活，就像律法和训诫中规定的那样，上帝也将不履行他的义务,保护，怜悯犹太人。

耶鲁公开课 - 旧约导论课程节选

The other path is taken by leaders who fulfill their obligations, and which would lead to improved relations between the United States and Sudan, including supporting agricultural development for all Sudanese, expanding trade and investment, and exchanging ambassadors, and eventually, working to lift sanctions -- if Sudanese leaders fulfill their obligations.

WHITEHOUSE: President Obama Attends Ministerial Meeting on Sudan

We retain full confidence in the IMF and its continued capacity to fulfill its obligations, to fill its role -- rather fulfill its role in the global economy during this difficult period.

WHITEHOUSE: Press Briefing

Hoffman, SAP, and Leeway would be wise to fulfill their obligations to the court without delay.

FORBES: Simply Ignoring Court Orders Is Not The Best Strategy