英语词汇protobitumen的读音、用法、中文释义、短语词组及例句-英汉双解词典

单词	protobitumen
释义	protobitumen 英?[pr??t??b?t'j?m?n] 美?[pro?to?b?t'j?m?n] 释义原沥青（有机物转化为石油的最初阶段）
随便看	Song Da song-dam song-dams Songdan Songdo Song-dong Songdong-ri Songdowon song dynasties Song dynasty songe Songea songe bath songed Songeons songer songers songes songfest songfests songfic song form songful songfully songfulness

英汉双解词典包含4367426条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。