nebulae pl. 星云 发音 /ˈnɛbjʊliː/ 释义与例句 n. 1. plural of nebula 相关短语 planetary nebulae preplanetary nebulae protoplanetary nebulae solar nebulae reflection nebulae absorption nebulae white nebulae dark nebulae emission nebulae radio nebulae spiral nebulae planetary nebula 行星状星云 reflection nebula dark nebula preplanetary nebula