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|
rock-solid : 50 phrases in 21 subjects |
| American usage, not spelling | 1 |
| Chess | 1 |
| Communications | 1 |
| Construction | 1 |
| Dental implantology | 1 |
| Figure of speech | 2 |
| General | 9 |
| Geology | 6 |
| Hydraulic engineering | 1 |
| Hydrology | 1 |
| Informal | 1 |
| Makarov | 12 |
| Natural resourses and wildlife conservation | 1 |
| Oil and gas technology | 1 |
| Oilfields | 2 |
| Programming | 1 |
| Rail transport | 2 |
| Rhetoric | 1 |
| Road works | 2 |
| Seismology | 2 |
| Technology | 1 |