例句與造句

1. The launch successfully placed SES-1 into a subsynchronous orbit close to geostationary altitude.
2. The inner of the two Martian moons, Phobos, is in a subsynchronous orbit of Mars with an orbital period of only 0.32 days.
3. It's difficult to find subsynchronous orbits in a sentence. 用subsynchronous orbits造句挺難的