例句與造句

1. There are 260 active communications satellites today . _ __
2. In 1962, he played a key role in the development and launch of Telstar, the first active communications satellite.
3. Telstar, the first active communications satellite also developed by Bell Labs and launched in 1962, used these solar cell batteries as an external renewable source of power once launched.
4. These orbit rings are believed to represent the tracks of Yuri Gagarin, the first man in space, John Glenn, the first American to orbit the Earth, and Telstar, the first active communications satellite.
5. The result of the project, which used both real-time and store and forward techniques, was a major scientific breakthrough which proved that active communications satellites could provide a means of transmitting messages from one point to any other on Earth.
6. It's difficult to find active communications satellite in a sentence. 用active communications satellite造句挺難的