登录
a device that can send and receive documents in electronic form using a telephone line and then print them
传真机
a communication device used for talking to people who are far away and also have a similar device
电话
a type of telephone that uses internet protocol to transmit voice calls over the internet, rather than traditional telephone lines
网络电话
a wireless communication device allowing two or more people to communicate over a shared frequency
对讲机
a portable two-way radio used for communication between two or more people within a certain range
报话机
a communication system that allows people in different parts of a plane, office, etc. to speak to each other
对讲系统
a technology that enables real-time communication and collaboration between two or more people using video, audio, and chat features, regardless of their location
视频会议系统
a machine that answers missed calls and records the messages callers leave
电话应答机
a small electronic device that generates beeping sounds to signal one should call someone
呼叫器
a mobile phone that uses satellites for communication in remote areas where traditional cellular networks are not available
卫星电话
an international system of sending and receiving messages using a phone line and a teletypewriter
电传
a communication device that uses telegraph technology to send and receive text messages over long distances, once used before the advent of fax machines and email
电传机
a portable device that combines the functions of a cell phone and a computer, such as browsing the internet, using apps, making calls, etc.
手机
a small computer that you can take with you wherever you go, and it sits on your lap or a table so you can use it
笔记本电脑
a method of communication that uses radio signals, instead of wires, to send out data
无线电
a form of visual communication that involves sending a message through smoke from a fire
烟雾信号
a person who carries a message or information from one person or place to another
信使
a person who makes public announcements or proclamations in a loud voice in a public space before modern forms of mass communication
镇上的喊叫者
a type of percussion instrument that is used in various cultures in Africa and other parts of the world to send messages over long distances by imitating the tone and rhythm of spoken language
会说话的鼓
a system of signaling using flags or other devices to communicate messages over a long distance
信号
a communication system by which people were able to send and receive messages over long distances, using electrical or radio signals
电报
a system of communication that uses dots and dashes to represent letters, numbers, and symbols, enabling messages to be transmitted over long distances through sound or light signals
莫尔斯电码
a form of communication that uses whistling to imitate spoken language and transmit messages over long distances in hilly or mountainous areas
口哨语言
a telephone with a microphone and a loudspeaker that can be used without the need to be hold near one's ear
扬声器
a written or printed message that is sent to someone or an organization, company, etc.
信
the transmission of information, data, or messages over a distance through the use of electronic or optical signals, media, and technologies
电信
