儿子:几经犹豫,还是决定给你写这封信。世事难料,我怕哪一天突然会有什么事,让我来不及对你说出下面这些话。2012年,中央电视台推出了大型公益活动《我的父亲母亲》,从那时起,我就决定要给你写这封信了。我的母亲、你的外婆晚年患了脑退化病,那时医学还不发达,我们不知道外婆是患病,只是后来才知道了那个病名:老年痴呆症。那几 Son: After a few hesitations, I decided to write you this letter. Unforeseen things, I am afraid of what day suddenly what happened, let me say too late to you these words. In 2012, CCTV launched a large charity called “My Father and Mother,” and I have decided to write this letter to you since then. My mother, your grandmother suffered from degenerative brain disease in his later years. At that time, medicine was still underdeveloped. We did not know that his grandmother was ill and only later did he know the name of the disease: Alzheimer’s disease. That few