精神功能衰退在死前的最后四年尤为迅速。
Mental functions decline especially rapidly in the last four years before death.
它降低精神功能。
以精神科量表及日常行为状况对病人的精神功能和社会功能进行评价。
The psychic and social functions of these patients were assessed by means of psychiatric scale and ordinary behavior.
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