 |
| |||
| echo area; echoing area | |||
| reflective surface area | |||
|
反射面积 : 12 phrases in 3 subjects |
| Electronics | 5 |
| Space | 6 |
| Technology | 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