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
Try this. It's size eight.
试试这一件。尺码是八号。
Who is this?I don't recognize your voice.
你是谁?我不认出你的声音。
Late in the afternoon, the boys put up their tent in the middle of a field.
傍晚时分，孩子们在田野中央搭起了帐篷。