長笛open hole 怎樣避免漏風?我意指不加"膜",已經很努力練,但仍未能全部開孔,只開到3個!如exam 時仍加上膜,會否低分了??
Thx!!!
收錄日期: 2021-05-02 17:09:48
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070320000051KK01574