Using similar satellite technology, around 200 communication satellites orbit the globe each day.

采用相同的卫星技术，每天大约有200颗通讯卫星围绕地区运转。

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Communication satellites permit the exchange of live television programs between nations and continents.

通讯卫星能进行跨国或跨洲实况电视转播。

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Scientists hope to gain a better understanding of so-called "space weather," which can sometimes knock out weather or communication satellites orbiting the Earth.

科学家们希望能够更好的了解所谓的“太空天气”，“太空天气”有时会对地球天气或对地球轨道上的通信卫星造成破坏。

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The MUOS constellation is eventually expected to include four next-generation communication satellites and an in-orbit spare.

WSJ: U.S. to Trim Commercial-Satellite Use

Virgina-based Iridium is almost halfway through a multi-year plan to replace its low-earth orbit network of communication satellites with a powerful new generation.

FORBES: Iridium Preps Its NEXT Generation Of Satellites

Beryllium: used as a lightweight component in military equipment and in the aerospace industry. it is used in high-speed aircraft, missiles, space vehicles and communication satellites.

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