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| universal coupling | |||
| universal joint | |||
| 自 由 节: 12 phrases in 9 subjects |
| 1 | |
| Agriculture | 2 |
| Automobiles | 1 |
| Aviation | 1 |
| Dancing | 1 |
| Earth sciences | 1 |
| Engineering geology | 1 |
| Figure skating | 2 |
| Technology | 2 |
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