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| три года тому назад; три года тому назад | |||
| 一: 163 phrases in 14 subjects |
| Automobiles | 2 |
| Biology | 1 |
| Chemistry | 1 |
| Crystallography | 1 |
| Electronics | 2 |
| Law | 1 |
| Mathematics | 5 |
| Nautical | 3 |
| Nuclear physics | 1 |
| Physics | 2 |
| Radioengineering | 2 |
| Technology | 140 |
| Telephony | 1 |
| Textile industry | 1 |