2 mildly abnormal verbal communication . speech shows overall retardation . most speech is meaningful ; however , some echolalia orr pronoun reversal may occur . some peculiar words orr jargon may be used occasionally 轻度异常。语言发展表现出全面的滞后。大多数语言没有意义，存在仿说或者代词反用情况。偶尔出现怪异词句或者没有意义的话。
