The company received an unexpected windfall when its old warehouse sold above market value.

公司的舊倉庫以高於市價的價格售出，讓公司意外獲得一筆橫財。

Several employees invested their bonus windfall in the firm's new stock purchase plan.

幾位員工把意外得到的獎金投入公司新推出的員工認股計畫。

The airline enjoyed a windfall from falling fuel prices during the busy summer season.

在忙碌的暑假旺季，燃油價格下跌讓這家航空公司賺到一筆意外之財。