 |
| |||
| 井 (掘入地面的一个洞，以此来获取水、油、盐水或天然气的供应。) | |||
| puits: 45 phrases in 12 subjects |
| Agriculture | 1 |
| Bioenergy | 1 |
| Economy | 1 |
| Environment | 3 |
| Forestry | 2 |
| Hydrology | 2 |
| International Monetary Fund | 1 |
| Nuclear physics | 2 |
| Technology | 5 |
| Thermal Energy | 1 |
| United Nations | 6 |
| Water resources | 20 |