Some of the answers may come from a nonprofit organization that has been building and launching amateur satellites for nearly 50 years.
一些答案可能来自一个已经建造和发射业余卫星近 50 年的非营利组织。
2019年英语六级阅读真题
10. AMSAT operates on the principle of having all its technical data accessible to its members, preventing the abuse of amateur satellites.
10. AMSAT 的运作原则是让其成员可以访问其所有技术数据,以防止滥用业余卫星。
英语百科
Amateur radio satellite
An amateur radio satellite is an artificial satellite built and used by amateur radio operators for use in the Amateur-satellite service. These satellites use amateur radio frequency allocations to facilitate communication between amateur radio stations.