求翻译：Mr. Cai impressed first of all with his distinguished scholastic performance and his all-round development. He is almost a hero-like character on the campus. He is widely recognized, for his rank of always being one of the top five in various tests and exams, for his well-balanced development in all fields, for his broad horizon which is rarely found in other students. As a result, he had been conferred with the title of "Student of Excellence" for three consecutive years, the highest honor in most Chinese high schools. His mastery of computer science, which is far above school requirement and even higher than some of the college students, is most talked about and admired by both the school faculty and students. What especially surprised me is that his tutor in the computer contest told me that he obtained such achievement solely through his painstaking self-education. It is already beyond his teachers to offer him any advanced knowledge.是什么意思？

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