verb · to sell more tickets or reservations than the actual capacity available, specifically for airline seats or hotel rooms

由于航空公司机票超卖，一些旅客不得不改乘后续航班。

verb · to sell more of a product than is in stock or, in finance, to sell a security excessively beyond its market value

因为系统故障，这家电商平台在促销活动中超卖了数百件商品。