protogalaxy

/proh-toh-gal-uhk-see, proh-toh-gal-/US // ˌproʊ toʊˈgæl ək si, ˈproʊ toʊˌgæl- //UK // (ˌprəʊtəʊˈɡæləksɪ) //

原子星系,原子系,原子星,原动力

Definitions

n.名词 noun

1
plural pro·to·gal·ax·ies.Astronomy.
- : the large concentration of gas and dust from which a galaxy is formed.