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| 自然风险 | |||
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| 正常的风险; 自然的风险 | |||
| 自然风险; 正常风险 | |||
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| 自然风险 (通过自然世界而非人类活动造成的对人类健康、财产或者环境危害的可能性。) | |||
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natural risks : 3 phrases in 2 subjects |
| Environment | 2 |
| Exhibitions | 1 |
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