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复 杂 程度 : 24 phrases in 10 subjects |
| Artificial intelligence | 1 |
| Business | 1 |
| Ecology | 1 |
| Economy | 1 |
| Engineering geology | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Project management | 1 |
| Technology | 14 |
| Wind Energy | 1 |
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