我早餐吃了一个三层三明治，里面有火腿、鸡蛋和生菜。

For breakfast, I had a ___three-decker with ham, eggs, and lettuce.

她做了一个三层架子来展示她的收藏品。

She made a ___three-decker shelf to display her collection.

维多利亚时代的读者特别喜欢购买三卷本小说。

Victorian readers especially loved buying ___three-deckers.