non-delivery
noun [ C or U ] (also nondelivery) uk/ˌnɒn.dɪˈlɪv.ər.i/ us/ˌnɑːn.dɪˈlɪv.ɚ.i/
（货物、信件、包裹等的）未投递，未送达
a situation in which goods, letters, parcels, etc. that have been ordered or sent are not delivered (= taken to people's houses or places of work)
In the case of non-delivery, the time limit for making a claim is 42 days.
If a customer repeatedly claims nondelivery, delete their name from your mailing list. 如果有客户多次声称未送达，请将其姓名从邮寄名单中删除。
The right of the buyer to recover any payments he has already made clearly applies in the case of a non-delivery.
（承诺的）未兑现
a situation in which something that has been promised is not achieved or produced
The contract has been canceled as a result of a non-delivery by the Department of Health on their contractual obligations.
Businesses can sometimes be critical of IT departments over non-delivery, but sometimes delays are unavoidable. 企业有时会因为信息技术部门不能按时完成任务而对其提出批评，但有时延迟是不可避免的。
- More examples
- One common form of cyberfraud is nondelivery of merchandise bought online.
- I emailed the seller three times and then filed a non-delivery report.
- The government is taking a proactive approach to avoid non-delivery of this project.