其中的一个就是二轮机器人，在一段距离以外的使用者可以通过电池供电的耳机发出指令，无线遥控机器人。
One is a two-wheeled robot that can be moved forward by a user standing at a distance, who wears a battery-powered headset that transmits signals wirelessly.
多年来，消费电子产品、汽车和自动呼叫中心一直就在“倾听”使用者的指令。
Consumer electronics, cars and automated call centers have been "listening" to commands for years.
本设备还可用于引起使用者的注意、命令计算机读出一段文字或向电视等外部设备发出指令。
The device can also be used to attract a minder's attention, to get a computer to read out a text or to send commands to external devices such as a TV.
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