land-office business 兴旺的生意；兴旺的业务；买卖兴隆；极好的生意

【例句】
It was a hot day and the drive-ins were doing a land-office business in ice cream and cold drink.
那天天气很热，把服务送上汽车的路边餐馆的冰淇淋和各种冷饮的生意特别兴隆。

It was an exceptionally cold winter,and our company was doing a land-office business in electric heaters.
那是一个异常寒冷的冬天，我们公司的电暖炉十分畅销。