在美国，约有20%的儿童患有某种学习机能失调症，它被称之为读写困难症。

在美国，约有20%的儿童患有某种学习机能失调症，它被称之为读写困难症。的英文翻译

基本释义

• As many as 20%25 of all children in the United States suffer from some form of the learning disorder called dislexia.