单词	行星[轨道]状星云
释义	行星[轨道]状星云planetary nebula
随便看	labor statement的意思 labor statesman的意思 labor statistics的意思 labor supervision and inspection的意思 labor supervisor的意思 labor supply的意思 labor supply curve的意思 labor symphony的意思 labor theory of value的意思 labor the point的意思 labor tickets的意思 labor time的意思 labor-time sheet的意思 labor total的意思 labor turn-over的意思 labor turnover的意思 labor turnover rate的意思 labor under ...的意思 labor union的意思 labor unionist的意思 labor union law的意思 labor unions的意思 labor unrest的意思 labor-using technology的意思 labor variance的意思