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| dynamic reciprocity | |||
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动交替 : 17 phrases in 9 subjects |
| Animal husbandry | 1 |
| Athletics | 1 |
| Automobiles | 1 |
| Earth sciences | 1 |
| Electric machinery | 1 |
| Electronics | 2 |
| Gymnastics | 1 |
| Oil / petroleum | 3 |
| Technology | 6 |
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