?四轨录音
... four-track recorder 四轨迹录音机 four-track recording 四轨录音 four-track line 四线铁路 ...
四声道录声
四磁迹录音
四路立体声录音
From a recording point of view, the simple four-track, sometimes mono, sound and structure of the early songs seem dated, but the musical quality is undeniable.
BBC: CD Review: The Beatles
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。