We tested it last week on twelve- to fifteen-year-olds,
我们上一周曾在十二岁至十五岁的孩子中试过这项游戏,
Imagine a railway station, a bus company or a cinema, which many people need to ring to find out the times of trains, buses or films.
想一想,有许多人需要打电话到火车站、汽车公司或电影院,以便弄清火车、汽车的起始时间或电影放映的时间吧。