Failure of performance
[经] 未履行合同
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
Where's my husband?
我丈夫怎么还没来？
This metal is harder than that one.
这种金属比那种硬。
I insist that you give me my money back.
我要求你把钱退给我。