例句與造句

1. At some point in February, a Long March 3B rocket is expected to launch two navigation satellites; Compass-M2 and Compass-M3, as part of the Compass navigation system.
2. Septentrio s receivers were used to track experimental Galileo signals transmitted by the GIOVE-A satellite and were also the first to track the signals of the first experimental satellite of the future Chinese Compass navigation system.
3. It's difficult to find compass navigation system in a sentence. 用compass navigation system造句挺難的