同根派生 英汉例句用作名词 (n.)If you've ever played an old LP record where the hole was not quite centered, you've heard the pitch rise and fall with each revolution.要是你播放过老式慢转密纹唱片，你就能听到，当唱片的空穴没有置于唱机正中央，唱片每转一周，音乐都会有音调高低的变化。