When I have to march, double lip feels too unstable for comforts sake.
When I have to march, double lip feels too unstable for comforts sake.
当在军乐队作行进演奏时，双包可能造成乐器不固定。
When I have to march, double lip feels too unstable for comforts sake.
当在军乐队作行进演奏时，双包可能造成乐器不固定。