adj.智力遲鈍的；發(fā)展遲緩的
The parents was anxiousabout their retarded son. 這對(duì)父母為他們的弱智兒子擔(dān)憂。
He invested a lot of time in trying to help retarded children. 他把大量時(shí)間化在設(shè)法幫助弱智兒童上。
