第 17 集: 哆啦A夢向大雄和自己展示了一塊能逆轉或推進時間的魔法布。

17

The episode begins with Nobita and Doraemon watching TV. The TV is old, but Nobita's mom is able to keep it working with a pound. Doraemon pulls out a cloth that can reverse or progress time depending on which side it is on. (Source: Wikipedia)