打包袋（盒），用于在餐館吃飯后打包帶走未吃完的食物

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 :因為美國人不好意思把在飯館吃剩的菜帶回家,怕有失面子.曾經(jīng)有人對服務(wù)員說："Waiter,could you please wrap up the rest of this steak for me I'd like to take it home for my dog." (請你把這塊牛排包起來,我想帶回家給我的狗吃.).doggy bag 這個名稱現(xiàn)在成了日常用語.