| |||
| 源于陆地的污染 | |||
| 陆源污染源; 陆地来源的污染 | |||
|
Land-based Sources of Pollution : 9 phrases, 3 sujets |
| Écologie | 1 |
| Nations unies | 5 |
| Technologie | 3 |
| |||
| 源于陆地的污染 | |||
| 陆源污染源; 陆地来源的污染 | |||
|
Land-based Sources of Pollution : 9 phrases, 3 sujets |
| Écologie | 1 |
| Nations unies | 5 |
| Technologie | 3 |