首要且最重要的，到教室上課對學生最有益的事是能讓學生因經驗累積而提升自

首要且最重要的，到教室上課對學生最有益的事是能讓學生因經驗累積而提升自信心。

結果 (英文) 1:

First and foremost, the most beneficial thing for students in the classroom is to increase their self-confidence due to accumulated experience.

結果 (英文) 2:

First and foremost, the most beneficial thing for students to attend classes in the classroom is to enable them to improve their self-confidence as a result of their accumulated experience.

結果 (英文) 3:

First and foremost, the most beneficial thing for students to come to the classroom is that they can improve their self-confidence through the accumulation of experience.