英语词汇“first species”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	first species
释义	first species first species [′fərst ′spē‚shēz] (mathematics) The class of sets G₀ such that one of the sets G_nis the null set, where, in general, G_nis the derived set of G_n-1.
随便看	serious persistent mental illness serious professional misconduct serious radio serious replies only serious reportable event serious risk serious safety event rate serious (single) serious (song) seriph seriphidium seriphidium canum seriphidium maritimum seriphidium tridentatum seriphus seriphus politus serir seris serisawa kojiro seriscission seritinous seritonin serivet serj serjeancy

英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。