A current of high potential is used in transmitting electric power over long distance.

高压电流被用来远距离输送电力。

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Today we can also communicate over long distance with the help of communications satellites.

今天我们可以在与卫星通信的帮助进行远程通信。

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From the earliest times people were faced with the problem of sending messages over long distance.

远古以来，人们就面临着远距离传送消息的问题。

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And the telephone companies in the United State, generally about 200 billion dollars a year carrying long distance telephone conversations and they thought this conversations might be carried for free over the internet was quite shocking to them. Of course free is very low price, and they are not like it to be free.

美国的各电话公司，一般大约有每年2千亿美元,来自长途电话会话，他们认为,这些会话有可能通过互联网免费传输,对他们来说是相当震惊的，当然了,免费是很低的价格了，他们不希望它免费。

麻省理工公开课 - 媒体、教育、市场课程节选

Unseen, though, was another opponent: Prefontaine, whose presence decades after his death on May 30, 1975, at the age of 24, has loomed large over long distance running in the United States.

CNN: Chasing Prefontaine: The run for a record

Designing them to light up an entire room or shine a beam over a long distance is far more technically challenging and requires higher production costs.

FORBES: Startup Soraa Launches LED Light For Shops, Museums

Deregulation has led to a huge increase in competition: there are now over 500 long-distance carriers in America.

ECONOMIST: The telecom sector has overreached itself