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| 外部类型 | |||
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external type : 22 phrases in 10 subjects |
| Automobiles | 3 |
| Aviation | 1 |
| Electric machinery | 2 |
| Metallurgy | 1 |
| Nautical | 2 |
| Radio | 1 |
| Refrigeration | 1 |
| Space | 1 |
| Sports | 1 |
| Technology | 9 |
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