Long distance telephony was also an option, but costs were very high and it often sounded as if the other party was speaking from inside some kind of echo chamber on a distant planet.

• 当然，长途电话也是一个选择，但价格十分昂贵，而且话筒另一边的声音听起来总像是从一个遥远星球的回音室里传来的。