 |
| 集中的: 181 phrases in 11 subjects |
| Aviation | 2 |
| Business | 37 |
| Economy | 1 |
| Education | 11 |
| Electronics | 7 |
| General | 102 |
| Mathematics | 1 |
| Military | 3 |
| Mining | 1 |
| Oil processing plants | 1 |
| Technology | 15 |
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