| |||
| 第类邮件 | |||
| 密封〔第一类〕邮件 | |||
| 一等邮件 | |||
| 一类邮件; 头等邮件; 密封邮件系不受检查，邮资最高的 | |||
| 密封邮件 | |||
| English thesaurus | |||
| |||
| FCM | |||
|
first-class mail : 2 phrases in 2 subjects |
| Law | 1 |
| Public security | 1 |
| |||
| 第类邮件 | |||
| 密封〔第一类〕邮件 | |||
| 一等邮件 | |||
| 一类邮件; 头等邮件; 密封邮件系不受检查，邮资最高的 | |||
| 密封邮件 | |||
| English thesaurus | |||
| |||
| FCM | |||
|
first-class mail : 2 phrases in 2 subjects |
| Law | 1 |
| Public security | 1 |