One night, the gaoler decided to play a joke on his colleague to find out if, after so many performances, he had managed to learn the contents of the letter by heart.

• 一天晚上，监狱长（狱卒）决定和他的同事开个玩笑，看看如果在很多表演（他反复表演了那么多场）之后，他是否已经对信的内容熟记于心。