Fluency in a second language could delay the worst symptoms of Alzheimer's Disease for several years
원문출처 : https://www.cnn.com/videos/tv/2020/10/21/staying-well-bilingual-brain-for-wellness.cnn
원문출처 : https://www.cnn.com/videos/tv/2020/10/21/staying-well-bilingual-brain-for-wellness.cnn