translation.en: Now in the 20th century, there was some hope that was generated through the development of pharmaceuticals for treating brain disorders, and while many drugs have been developed that can alleviate symptoms of brain disorders, practically none of them can be considered to be cured.
translation.zh: 如今在20世纪， 通过治疗脑部疾病的 制药业的发展浮现出的一些希望 同时很多药物被研发出 能减缓脑部疾病的症状 实际上没有那种病被认为是能被治愈的