second class mail的意思|示意
开口信，单据，印刷品等邮件
second class mail相关短语
1、 Second-class mail 二类邮件,二等邮件
2、 second-class mail route 二级干线邮路
3、 second class air mail 二等空邮
4、 second class air mail item 二等航空邮件
5、 second class air mail detail 二等空邮
second class mail相关例句
It arrived by first-class mail in second-class condition.
那是第一级的邮件，收到时却处于第二级状态。
It arrived by first-class mail in second-class condition. It is impossible to tell where the law stops and justice begins.
头等邮件收到时却是二等情况。你无法说得准在何处法律让位给正义。