弱智

tā shì yī míng ruò zhì ér tóng

他是一名弱智儿童。

He is a retarded child.

nǐ shì ruò zhì ma

你是弱智吗？

Are you a retarded child?

tā shì yī míng ruò zhì zhě

他是一名弱智者。

He is a retarded person.