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retention : 187 phrases in 37 subjects |
| Accumulators | 1 |
| Agriculture | 10 |
| Automated equipment | 1 |
| Chemistry | 10 |
| Earth sciences | 6 |
| Economics | 2 |
| Electronics | 1 |
| Environment | 11 |
| Finances | 4 |
| Food industry | 1 |
| Forestry | 1 |
| General | 4 |
| Health care | 1 |
| Hobbies and pastimes | 1 |
| Human rights activism | 3 |
| Hydrology | 3 |
| Immigration and citizenship | 4 |
| Industry | 6 |
| Information technology | 3 |
| Insurance | 5 |
| International Monetary Fund | 2 |
| Law | 13 |
| Life sciences | 16 |
| Measuring instruments | 1 |
| Mechanic engineering | 1 |
| Medical | 33 |
| Microsoft | 7 |
| Natural sciences | 3 |
| Procedural law | 3 |
| Soil science | 1 |
| Technology | 1 |
| Textile industry | 7 |
| Transport | 2 |
| United Nations | 3 |
| Veterinary medicine | 10 |
| Water resources | 5 |
| Wood processing | 1 |