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清 洗 流 : 25 phrases in 9 subjects |
| Agriculture | 1 |
| Automobiles | 1 |
| Construction | 1 |
| Information technology | 1 |
| Metallurgy | 4 |
| Space | 2 |
| Steel production | 1 |
| Technology | 13 |
| Telecommunications | 1 |
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