单词	butanoic acid
释义	bu·ta·no·ic acid (by′tə-nōĭk) n. See butyric acid. [BUTAN(E) + -OIC.]
随便看	semitonally semitone semitrailer semitransparent semitropical semivegetarian semivowel semiweekly semiyearly Semmelweis semolina sempervivum sempiternal sempiternity semplice sempre Semtex semé sen sen Sen. senarius senary senate senator

英语词典包含135693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。