Pronoun reversal is common in toddlers. While it may signal an autism-spectrum disorder when it persists for an abnormal length of time, some degree of pronoun confusion can occur as a part of normal speech development.
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。