| 释义 |
extragalactic nebula ˌekstrəɡəˈlæktikˈnebjələ 短语¹³¹⁶²⁰⁺³ 基本英英近义反义 河外星云
Noun: astronomy a collection of star systems; any of the billions of systems each having many stars and nebulae and dust;`extragalactic nebula' is a former name for `galaxy' 近义词 galaxy银河 |