1、Even if they don't vanish completely, books will become a niche item a la long-playing records.
即使紙質(zhì)書籍不會完全消失，也會隨著時間變成小眾產(chǎn)品。

2、a long-playing phonograph record; designed to be played at 33.3 rpm.
一種長期播放的留聲機唱盤；每分鐘轉(zhuǎn).圈。

3、During uploading, the continuing decrease in speed of a long-playing video was significant.
在上載過程中，長時間播放的視頻的速度的持續(xù)下降是很明顯的。

long-playing翻譯