celestial movement

• 天文

celestial movement的用法和样例：

例句

1. It is called celestial navigation.
   它叫做天文导航。
2. The gravitational field equations foreseeable galaxies separatist movement, later astronomical observations of this galaxy separatist movement.
   从引力场方程可预见星系分离运动，后来的天文观测到这种星系分离运动。