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| human safety | |||
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人的 安 全 : 23 phrases in 9 subjects |
| China | 2 |
| Cryptography | 1 |
| Economy | 3 |
| Explosives and Explosive Ordnance Disposal | 5 |
| Project management | 2 |
| Sports | 1 |
| Technology | 3 |
| United Nations | 3 |
| Water resources | 3 |
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