 |
| |||
| 简单波 | |||
|
simple wave : 11 phrases in 4 subjects |
| Business | 1 |
| Electric machinery | 1 |
| Oil / petroleum | 1 |
| Technology | 8 |
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