英语词汇certified mail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	certified mail
释义	certified mailn.（名词） Uninsured first-class mail for which proof of delivery is obtained.保证邮件：保证送到但未经保险的一级邮件
随便看	petrochemistry petrodollars petrog. petrogenesis petroglyph petroglyphs Petrograd petrographies petrography petrol petrol. petrolatum petrolatums petroleum petroleum petroleum jelly petroleums petrolic petrologies petrology petrols Petronius Petropavlovsk Petropavlovsk-Kamchatski petropolitics

英汉双解词典包含166908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。