基督降临历（挂在墙上的装饰卡，上有小门，孩子们在12月1日至圣诞节前每天打开一扇小门就可看到里面的图画）a decorative piece of card or cloth with a small space or window for each of the days of the month before Christmas. Each day a space or window is opened to find a different picture, a piece of chocolate, or a present.