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在北京市西单百货商场的橱窗里,一台蝙蝠牌电扇到今年四月十八日已整整转了两年。两年是个什么概念呢?就是说,这台电扇已连继工作了一万七千五百二十个小时。有人算了一笔帐,如果一对二十四岁的年轻夫妇,买一台这样的电扇,按北京地区的气候,每年使用四个月,每天转六小时,二十四年以后,到这对夫妇四十八岁时,他们买的电扇转时累计也是一万七千五百二十小时;如果这对夫妇结婚一年即有子女,如
In the window of Xidan Department Store in Beijing, a bat fan has been turned completely for two years until April 18 this year. What is the concept of two years? That is, this fan has been working continuously for 17,500 two hundred and twenty hours. Someone made a calculation. If a 24-year-old young couple bought one such fan, according to the climate in Beijing, he would use it for four months a year, six hours a day, and twenty-four years later When the couple was 48, the total number of fans they bought was also 17,500 hours. If the couple had children for one year after marriage,