neon的解释n.氖neon的例句Acolorless,odorless,tasteless,gaseousmixture,mainlynitr ogen(approximately78percent)andoxygen(approximately21percent)withlesseramountsofargon,carbondioxide,hydrogen,neon,helium,andothergases.空气一种无色、无嗅、无味的气体混合物，主要由氮气（约占78％）和氧气（约占21％）组成，还有少量的氩、二氧化碳、氢、氖、氦及其它气体
