作者向对方解释了采访的目的，并在得到老师的同意后在笔记本上留下了记录。

The author explained the purpose of the interview to the other party and made a note in the notebook after obtaining the teacher's consent. Due to the relatively short questions, the interview time for each teacher is about 15 minutes. Student interviews were conducted in two separate sessions, with about four students sitting together after class. The interview time is about 15-20 minutes, and the content of the interview is also recorded.

The author explained the purpose of the interview to the other party and left a record in his notebook with the consent of the teacher. Due to the relatively short questions, the interview time for each teacher is about 15 minutes. The interview was conducted in two times. About four students sat together after class. The interview time is about 15-20 minutes, and the interview content is also recorded.

The author explained the purpose of the interview to the other party, and left a note in the notebook with the teacher's consent. As the question is relatively short, the interview time of each teacher is about 15 minutes. The interview with students is divided into two sessions, and about four students sit together after class. The interview time was about 15-20 minutes, and the interview content was recorded.