打包袋（盒），用于在餐馆吃饭后打包带走未吃完的食物

a bag for food that a customer did not eat at a restaurant; the transparent pretense is that the food is taken home to feed the customer's dog

doggy bag :因为美国人不好意思把在饭馆吃剩的菜带回家,怕有失面子.曾经有人对服务员说："Waiter,could you please wrap up the rest of this steak for me I'd like to take it home for my dog." (请你把这块牛排包起来,我想带回家给我的狗吃.).doggy bag 这个名称现在成了日常用语.