例句與造句

1. A paragraph at the start of the novel shows an excerpt from " The Romance of Modern Astrography ", explaining that the ship was part of the " Proxima Centauri Expedition, sponsored by the Jordan Foundation in 2119 " . ( A timeline produced by Heinlein to link different stories in his Future History places the launch of the " Vanguard " in the early 22nd century . ) A discovered ship's log begins in June 2172, a few days before the mutiny breaks out.
2. It's difficult to find astrography in a sentence. 用astrography造句挺難的