soup-ticket

例句：

1. 1. We need to buy a soup ticket for the hot pot restaurant.
   我们需要为火锅餐厅买一张汤票。
2. 2. The soup ticket is only 50 yuan, which is very reasonable.
   汤票只要50元，非常划算。
3. 3. The soup ticket was sold out before we even arrived at the restaurant.
   我们还没到餐厅就卖完了汤票。