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| 安全保护费用 | |||
| security costs: 11 phrases in 8 subjects |
| Business | 1 |
| Economy | 2 |
| Hydroelectric power stations | 1 |
| International trade | 2 |
| Marketing | 1 |
| Project management | 1 |
| Securities | 2 |
| Technology | 1 |
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