 |
| eaux usées: 139 phrases in 16 subjects |
| Agriculture | 3 |
| Chemistry | 2 |
| Earth sciences | 1 |
| Environment | 92 |
| Health care | 1 |
| Laboratory equipment | 1 |
| Mechanic engineering | 1 |
| Name of organization | 2 |
| Natural sciences | 2 |
| Nuclear physics | 2 |
| Social science | 1 |
| Textile industry | 1 |
| Transport | 2 |
| United Nations | 5 |
| Waste management | 14 |
| Water resources | 9 |