The growing population of elderly persons, the mentally disabled and developmentally challenged will maintain the need for these workers.

随著日益老龄化速度的加快和老年精神残疾等发育疾病的影响，社会将更加需要此方面的工作人员。

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Many years passed before doctors discovered that persons with the disorder were not mentally slow or disabled.

许多年之后医生才发现，患此症者的智力并不低下，身体也并不残缺。

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