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| 物质自我 | |||
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material self : 21 phrases in 9 subjects |
| Agriculture | 1 |
| Construction | 2 |
| Economy | 1 |
| Management | 1 |
| Metallurgy | 1 |
| Polymers | 2 |
| Space | 4 |
| Technology | 7 |
| Textile industry | 2 |
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