| 单词 | first-class mail |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔certified mail〕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美国传统〔printed matter〕Printed material, such as a book or magazine, that is not considered first-class mail and qualifies for a special postal rate.印刷品：寄递时认为不属于第一类邮件而可按特种邮资付费的印刷材料，如书或杂志美国传统〔special handling〕The handling of fourth-class or parcel-post mail as first-class mail for an extra charge.快速处理投递：将四级邮件或包裹邮件作为一级邮件处理并收取额外费用的投递美国传统Most first-class mail (=the more expensive class of post in Britain which is delivered more quickly than second class) is delivered the day after it is posted.大多数一类信件都是在寄出的第二天就投递的。剑桥国际 |
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