英语词汇“certified mail”是什么意思，“certified mail”的读音、用法及例句翻译-烛光网

词汇	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	infection infections infectious infectious enterohepatitis infectious hepatitis infectious mononucleosis infective infects infelicitous infelicity infer inference inferences inferential inferior inferiority complex inferiors infernal infernal machine infernals inferno inferno infernos inferred inferring

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