mon·gol·ism /ˈmɑŋgəˌlɪzəm/
  蒙古症
  mon·gol·ism /ˈmɑŋgəˌlɪzəm/ 名詞
  mongolism
       n : a congenital disorder caused by having an extra 21st
           chromosome; results in a flat face and short stature and
           mental retardation [syn: mongolianism, Down's syndrome,
            Down syndrome, trisomy 21]