It was after he worked fore months to find ways to send something more than metallic twangs over the wires.

他已经花了好几个只来寻找在电线上传递其它声音的方法，而不是金属拨弦声。

John Wells, Professor of Phonetics at the University of London, said regional twangs had been seen before in birds.

伦敦大学语音学教授威尔斯说，地区口音过去曾在鸟类身上看到。