1. 银河的,巨大的：12. starch 淀粉 | 13. galactic 银河的,巨大的 | 14. come into play 开始活动/起作用

2. 银河的：Galactic Radiation Experiment Background Satellite 格雷勃试验卫星 | galactic 银河的 | Galaxy 银河系

3. 极大的：galactic nebula 银河星云 | galactic 极大的 | galactin 泌乳激素

4. 银河系：manifestly 显然 | Galactic银河系 | Rotation自旋

1. 星系的
Galactic means relating to galaxies.

adj

1. inconceivably large

Synonym: astronomicastronomical

2. of or relating to a galaxy (especially our galaxy the Milky Way)

e.g. the galactic plane