Remember that way that Franny can identify the timbre of her brother's voice very specifically: it's like no other.

记住Franny识别她哥哥,声音的特殊方法：，他不像其他的那样。

耶鲁公开课 - 1945年后的美国小说课程节选

We're used to thinking about sound being tranduced; being converted by acoustic waves into electrical signals that can be recognized by your iPods.

我们想想声音信号的转换过程,声音由声波转化为电子信号,你的iPod能够识别这种信号

耶鲁公开课 - 生物医学工程探索课程节选