 |
| |||
| high frequency method | |||
|
高 频法 : 38 phrases in 10 subjects |
| Air defense | 1 |
| Animal husbandry | 1 |
| Construction | 2 |
| Electronics | 1 |
| General | 6 |
| Industry | 1 |
| Metallurgy | 7 |
| Oil / petroleum | 3 |
| Sports | 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