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	stage casing pump stage cementing stage chamber pump stage characteristic stage circuit stage circulation stage cloth stagecoach stage-coach stage coach stage-coaches stagecoach stage collar Stage combat stage compaction stage compression stage construction stage contactor stage control stage cooking stage cooling stage cost stage costume stagecraft stage craft

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。