英语词汇“protobitumen”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	protobitumen
释义	protobitumen protobitumen [¦prōd·ō·bə′tü·mən] (materials) Any of the fats, oils, waxes, or resins which are present as unaltered or nearly unaltered plant and animal products from which fossil bitumens are formed.
随便看	half carry half cast half-cast halfcast half caste half-caste half-castely half-castes half cat half rabbit half cell half-cell half-cell potential half cent half cent (united states coin) half-centuries half-century half-chair form half chronometer half-circle half-clad half-clammed half-closed half-clothed half-clothedly half cock

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。