可否把以下英文譯成中文,感激不盡!
dyslexia has defied definition. Many attempts to label children who have specific reading(and spelling) difficulties have been rejected, and no one description of dyslexia is universally recognized.
(Dyslexia is ) a disorder manifested by difficulty in learning to read despite conventional instruction, adequate intelligence and sociocultural opportunity. It is dependent upon fundamental cognitive disabilities which are frequently of constitutional origin.