英语词汇classes of certificate of competency怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	classes of certificate of competency
释义	classes of certificate of competency 简明释义适任证书等级专业释义 1 交通运输工程适任证书等级 2 地球科学适任证书等级
随便看	Conus distans Conus dusaveli Conus ebraeus Conus eburneus conus elasticus conus elasticus laryngis Conus emaciatus Conus excelsus Conus eximius Conus figulinus Conus flavidus Conus floccatus Conus frigidus Conus fulmen Conus generalis Conus geographus conus glans Conus glaucus Conus gloriamaris Conus habui Conus hirasei conus ichinoseana Conus imperialis Conus inscriptus conus ione

英汉双解词典包含3185865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。