Mr. Kemere says first researchers need to settle some small problems such as what electrical signal to use. Kemere 先生说,研究人员首先需要解决一些小的问题,例如使用什么样的电信号. CALEB KEMERE: "We don't know what signal to use and we don't know how to do that modulation." CALEB KEMERE说:"我们不知道使用什么样的电信号,也不知道该怎么调制." ___________________________