From VOA Learning English, this is the Health and Lifestyle report. Have you ever found yourself in this situation: You hear a song you used to sing when you were a child – a bit of nostalgia. But it is not a distant childhood memory. The words come back to you as clearly as when you sang them all those years ago. It seems there is a scientific reason for this.________________________来自VOA学英语,这里是健康生活频道. 你是否曾经发现自己存在以下情况:当你听见你孩堤时经常听见的歌时,就会情不自禁得回首往事. 但是,这并不是来自儿童时期的记忆.你会对这些歌词记忆犹新. 这一切看起来都能用科学解释._____________________