LP
1948年， long-playing 唱片的缩写。
The most revolutionary development to hit the recording industry since the invention of the automatic changer is the Long Playing record, which can hold an entire 45-minute symphony or musical-comedy score on a single 12-inch disk. ... The disks, released a few weeks ago by Columbia Records and made of Vinylite, have phenomenally narrow grooves (.003 of an inch). They are played at less than half the speed of the standard old-style records. [Life magazine, July 26, 1948]
自动唱片机发明以来，最具革命性的发展是长播唱片，它可以在单个12英寸的唱片上容纳整个45分钟的交响乐或音乐喜剧配乐。...这些唱片是哥伦比亚唱片公司几周前发布的，由 Vinylite 制成，具有极窄的凹槽（.003英寸）。它们的播放速度不到标准老式唱片的一半。[《生活》杂志，1948年7月26日]
该词起源时间：1948年