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链 片 : 21 phrases in 11 subjects |
| Agriculture | 2 |
| Automobiles | 2 |
| Drilling | 2 |
| Electronics | 2 |
| Genetics | 1 |
| Metallurgy | 1 |
| Pharmacology | 2 |
| Plastics | 1 |
| Polymers | 3 |
| Skydiving | 1 |
| Technology | 4 |
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