Another important use of telecommunication satellites was demonstrated in 1974 when the "Teacher in Sky" satellite transmitted educational programs to classes in remote areas of the United States.

1974年，美国“空中教师”卫星把教育节目传送到了偏远地区的教室，这说明了通信卫星的另一个重要用途。

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The most common use of telecommunication satellites, however, has been for transmitting telephone calls.

然而，通信卫星最普遍的用途是传送电话。

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Telecommunication can make information from around the world available to use quickly and easily, but some people worry that this may be a risk to our privacy.

电信能使我们迅速和方便使用世界各地发来的信息，不过有些人担心我们隐私会因此有被暴露的危险。

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The International Telecommunication Union, which unites all 191 countries that use the world telephone system, hopes to take the lead in pushing for a global convention against cybercrime.

ECONOMIST: Cyberwarfare

For 145 years, ITU has coordinated the shared global use of the radio spectrum, promoted international cooperation in assigning satellite orbits, worked to improve telecommunication infrastructure in the developing world, established the worldwide standards that foster seamless interconnection of a vast range of communications systems and addressed the global challenges of our times, such as mitigating the impact of natural disasters and climate change and strengthening cybersecurity.

UNESCO: Post-Conflict and Post-Disaster Responses