The supplier reneged on its agreement to deliver the parts by Friday.

供應商違背了週五前交貨的協議。

If the client reneges on the contract, we will request a cancellation fee.

如果客戶違約不履行合約，我們將要求支付取消費用。

The candidate accepted our job offer but later reneged and joined a competitor.

那位應徵者接受了我們的工作邀約，後來卻反悔去了競爭對手公司。