An instrument that converts sound waves into an electric current, usually fed into an amplifier, a recorder, or a broadcast transmitter.
扩音器，麦克风，话筒将声波转变成电流的工具，通常接至扩音器，录音机或广播发射机上
The sending of a signal, picture, or other information from a transmitter.
播送从一发射机发送信号、图像或其它信息
A transmitter of disease; a transmitter of tall tales.
疾病传播者；一个散布无稽之谈的人
