滑音：常常在平滑的过渡中由一个音符转到另一个音符，而不是使用离散的音程。
Portamento : frequently, the change from one note to another is done in a smooth transition, rather than using discrete intervals.
滑音：常常在平滑的过渡中由一个音符转到另一个音符，而不是使用离散的音程。
Portamento : frequently, the change from one note to another is done in a smooth transition, rather than using discrete intervals.
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