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| 钢球轧制; 球轧 | |||
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ball rolling : 19 phrases in 10 subjects |
| Agriculture | 1 |
| Baseball | 1 |
| Chemistry | 1 |
| Football | 1 |
| General | 1 |
| Gymnastics | 1 |
| Metallurgy | 4 |
| Oil / petroleum | 4 |
| Plastics | 1 |
| Technology | 4 |
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