Sam's grandson is mentally defective and has limbs that won't function-a vegetable like all the others . 萨姆的外孙大脑受损，四肢不能正常活动，和那些孩子一样是个畸型儿。
2.
He is mentally defective 他智力不健全。
3.
A 22 - year - old mentally defective female presented with several localized long hairs on the superior area of the anterior side of her neck for several months 摘要一位22岁智障女性，数月之前在颈部前上部位出现数根长毛。
