 |
| |||
| send and receive | |||
| 发送和接收: 10 phrases in 5 subjects |
| Aviation | 2 |
| General | 2 |
| Geophysics | 1 |
| Project management | 4 |
| Telecommunications | 1 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips