 |
| |||
| year-on-year change | |||
|
年 度变化 : 4 phrases in 4 subjects |
| Desert science | 1 |
| Hydroelectric power stations | 1 |
| Space | 1 |
| 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