Changing the position in which the snorer sleeps also helps.
改变打鼾者的睡姿也会有所帮助。
Then you can find the best tone by changing the position of middle triangle.
然后你能通过改变中间三角形的位置来找到最好的色阶。
OttakarSevcik, School of Violin Techniques, Op. 1: Book 3: Shifting and Changing the Position.
舍夫契克《舍夫契克学派小提琴技巧》作品.1,图书3:换把位练习。
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