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	Infections,Strongylida Infections,Surgical Wound infection staphylococcal Infection,Staphylococcal Infections,Trematode Infections,Treponemal Infection,Streptococcal Infections,Trichomonas Infections,Tumor Virus infection success rate Infections,Upper Respiratory Infection,Surgical Wound Infections,Urinary Tract infection surveillance and control program Infections,Vibrio Infections,Wound Infections,Yersinia Infections,Yersinia pseudotuberculosis Infection,Taenia Infection,Tapeworm infection theory infection thread infection thread cellulose infection thread membrance infection through air

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。