ephemeris astronomy造句

例句与造句

1. The minor planet was named after Russian astronomer Valerij Ivanovich Valyaev ( b . & thinsp; 1944 ), chief of the Ephemeris Astronomy Department at the Institute for Theoretical Astronomy ( ITA ), which was then part of the USSR Academy of Sciences in Leningrad.
2. It's difficult to find ephemeris astronomy in a sentence. 用ephemeris astronomy造句挺难的