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- polarity telegraph system 极性电报制
- Public use of Morse's telegraph system Began in 1844 and lasted more than 100 years. 1844年公众开始使用摩斯的电报系统,并一直持续了一百多年。
- A wire or system of wires connecting telephone or telegraph systems. 电话线连接电话或电报系统的电线或电线系统
- Telegraph systems became unusable across Europe and North America. 欧洲与北美各地的电报系统再次瘫痪。
- Morse Code is a telegraphing system invented in the 1840s, by Samuel F.B.Morse. 莫尔斯电码是一种电码系统发明于19世纪40年代，由塞缪尔全莫尔斯。
- error-correcting telegraph system 纠错电报系统,改错电报系统
- permanent record telegraph system 永久性记录电报制
- The two systems of government are polar opposites. 这两种政体正好相反。
- American businessman and philanthropist who helped develop and unify telegraph systems in the United States and founded Cornell University(1868)with Andrew D.White. 康奈尔，以斯拉1807－1874美国商人，慈善家，帮助发展并统一了美国的电报系统，并与安德鲁 D 怀特一起建立了康奈尔大学（1868年）
- Cornell:american businessman and philanthropist who helped develop and unify telegraph systems in the United States and founded Cornell University (1868) with andrew D. White. 康奈尔:美国商人;慈善家;帮助发展并统一了美国的电报系统;并与安德鲁·D·怀特一起建立了康奈尔大学(1868年).
- Mobile Automatic Telegraph System 机动自动电报系统
- American businessman and philanthropist who helped develop and unify telegraph systems in the United States and founded Cornell University(1868) with Andrew D. White. 康奈尔，以斯拉1807－1874美国商人，慈善家，帮助发展并统一了美国的电报系统，并与安德鲁·d·怀特一起建立了康奈尔大学（1868年）
- He sent me the news by wireless telegraph. 他用无线电报把消息告诉我。
- Earlier, bush telegraph worked a treat. 人类早期传递信息的方法真棒，是件令人开心的事。
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- She went to the telegraph office in a hurry. 她匆匆忙忙向电报局去了。
- I suppose you also have a caste system in your society. 我想你们的社会里也有一种等级制度。
- The right to dissent is part of our political system. 有持异议的权利是我们政治体制的组成部分。
- He's a journalist on the Daily Telegraph'. 他是《每日电讯报》的记者。
- Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗？
