Our client welshed on the deal and never paid the final invoice we emailed him.

我們的客戶賴帳，始終沒有支付我們用電子郵件寄給他的最後一張帳單。

The finance team suspects the supplier will welsh on its promise to refund the deposit.

財務團隊懷疑供應商會賴掉退還訂金的承諾。

During the conference trip, Mark welshed on a dinner bet with his coworkers at the hotel.

在參加研討會的出差期間，馬克在飯店賴掉了和同事打賭輸掉的晚餐錢。