英语词汇protoplanetary nebula怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	protoplanetary nebula
释义	protoplanetary nebula 简明释义原行星云
随便看	frame station line frame stations framesticks frame stiffening frame stiffness frame stirrer framestone frame storage Framestore frame store frame story frame story frame story frame straightener frame stress frame stretch bending machine frame structure frame(structure) frame structure analysis frame-structured medical knowledge base frame structured medical knowledge base frame-structured representation system frame structured representation system frame structure picture frame structure

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。