monaural

1·A monaural presentation has to be used to yield a clear effect.

一个单声道的一定要有清晰的效果。

2·The EA Series offer advanced circuitry design, low profile chassis removable channel modules and true dual monaural configuration.

EA系列提供先进的电路设计，采用低身的外壳，可装插的通道模组以及真正的双路单声道配置。

3·But how would people hear it in theaters? Stereophonic sound had been around since the 50s, but most movie houses were mainly monaural, far below home audio quality.

但是人们要怎么能在电影院里听到呢？虽然立体音响自从上世纪五十年代就已问世，但是大部分的电影院播放的主要都是单声道，远远不如家庭声音质量。