 |
| |||
| 多年冻土; 永冻土 | |||
| 永久冻土 | |||
|
permafrost soil : 3 phrases in 2 subjects |
| Bridge construction | 2 |
| Rail transport | 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