 |
| |||
| ball exercise | |||
| 球操: 24 phrases in 13 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Economy | 1 |
| Electronics | 4 |
| Geology | 1 |
| Geophysics | 1 |
| Information technology | 2 |
| Metallurgy | 2 |
| Refrigeration | 1 |
| Skydiving | 3 |
| Space | 3 |
| Sports | 1 |
| Technology | 3 |
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