| 释义 |
neb·ulaBrE /ˈnebjələ/NAmE /ˈnebjələ/ noun (nebu·lae BrE /ˈnebjəliː/ NAmE /ˈnebjəliː/ ) (astronomy 天文学) a mass of dust or gas that can be seen in the night sky, often appearing very bright; a bright area in the night sky caused by a large cloud of stars that are far away 星云；外观似星云的星系 |