For almost 90 years, the television has been a one-waydevice, and it should be a two-waydevice.
在差不多90年里，电视机一直是一个单向的设备，而它本该是个双向的设备。
2
BBN Technologies has developed a translation device that enables a two-way dialogue between speakers of different languages.
BBN公司开发了一种翻译设备，这种设备可以允许使用不同语言的人进行双向对话。
3
Each device on the network can be given sensors to gather data plus two-way digital communication between the device in the field and the utility's network operations center.