常見例句用作名詞 (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.要是你播放過老式慢轉密紋唱片，你就能聽到，當唱片的空穴沒有置于唱機正中央，唱片每轉一周，音樂都會有音調高低的變化。 返回 long-playing record