1·So musical instruments evolved in ways that optimize their acoustical properties, how the instrument vibrates and sends those vibration through the air to our eardrums.
因此，乐器的进化优化了它们的声学特性，且优化了乐器振动的方式，并将这些振动通过空气传到我们的耳膜。
2·The ancient Greeks were aware of other acoustical principles, at least empirically.
至少在实践上，古希腊人也知道其他的声学原理。
3·So there are a lot of acoustical things and sort of tricks of synthetic things going on in pop music.
所以在流行音乐中有很多声学的东西以及合成的技巧在里面。
4·Vitruvius also added one of the great historical mysteries to the acoustical literature.
维特鲁威还为声学增加了一个重大的历史之谜。
5·Researchers revealed the video at the Acoustical Society of America meeting.
研究人员在美国声学学会的一次会议上展示了这段视频。
1·"Unpleasant to listen to" is a most noticeable acoustical feeling that lots of contemporary music works give to people.
“难听”是大多数现代音乐作品给人的最突出的听觉感受。
2·Acoustical liberation of books in the public domain.
意思是公共领域书籍的听觉解放。