中间的叫持续音踏板（Sustaining pedal），三角钢琴其持续音踏板不仅可以用来持续低音， 也可以持续装有制音器的任何乐音。
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N a foot-operated lever on a piano, usually the right one of two, that keeps the dampers raised from the strings when keys are released, allowing them to continue to vibrate 延音踏板 [music]
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