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| chug chug | |||
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чу-чу : 30 phrases in 16 subjects |
| Aviation | 1 |
| Catholic | 2 |
| Chinese | 2 |
| Drilling | 1 |
| Ecology | 1 |
| Energy system | 1 |
| General | 5 |
| Geography | 1 |
| Makarov | 1 |
| Medical appliances | 1 |
| Nautical | 1 |
| Nuclear physics | 2 |
| Obsolete / dated | 5 |
| Physics | 3 |
| Sakhalin | 1 |
| Technology | 2 |