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| 土黑色; 土黑 | |||
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earth black : 20 phrases in 7 subjects |
| Agriculture | 6 |
| Desert science | 2 |
| Electronics | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 1 |
| Technology | 5 |
| Textile industry | 3 |
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