 |
| 水火: 244 phrases in 21 subjects |
| Aviation | 1 |
| Chinese | 8 |
| Construction | 3 |
| Cooking | 2 |
| Drilling | 1 |
| Electronics | 3 |
| Figure of speech | 8 |
| Firefighting and fire-control systems | 5 |
| General | 127 |
| Geology | 4 |
| Literally | 4 |
| Metallurgy | 2 |
| Military | 9 |
| Nautical | 6 |
| Oceanography & oceanology | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 6 |
| Oil processing plants | 1 |
| Proverb | 3 |
| Religion | 2 |
| Technology | 47 |