Alan Smith and his wife run a small shop in a small town. It sells milk, butter, cheese, eggs and other things. It is open on Tuesday, Wednesday, Thursday, Friday and Saturday, and on Sunday morning, but it is shut on Sunday afternoon and on Monday. Alan goes to some farms on Monday and buys their best butter and cheese and eggs from the farmers, but he buys his milk in the town. Alan and his wife also sell a lot of food. One Saturday a woman came into the shop. She bought some eggs and some butter, and then she said to Alan, 'your eggs and your butter are dear today. Why are Saturday and Sunday dearer than the other days?' Alan smiled and said, 'Our food is not dearer on Saturday and Sunday. It is cheaper on Tuesday, Wednesday, Thursday and Friday.
艾伦?史密斯和妻子在一个小镇上经营一家小店。小店里卖牛奶、黄油、干酪、鸡蛋和其他一些东西。小店星期二、三、四、五、六及星期天上午开业，星期天下午和星期一休息。 星期一，艾伦去一些农场，从农民那里采购质量最好的黄油、干酪和鸡蛋，但牛奶是从镇上采购来的。 艾伦和妻子也出售许多食物。一个星期六，一位妇人来到店里。她买了一些鸡蛋和黄油，然后她对艾伦说：“今天你的鸡蛋和黄油贵了。为什么星期六和星期天的东西要比其他时候贵呢？” 艾伦笑着说：“我们的食物没有在星期六星期天涨价，而是在星期二、三、四、五降价了。”