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| 31. | marine pollution prevention |
| 防止海洋污染 |
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| 32. | Prevention of nuclear war |
| 防止核战争 |
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| 33. | Prevent desertification |
| 防止荒漠化 |
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| 34. | secure from loss |
| 防止损失 |
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| 35. | protection against the strong light |
| 防止强光 |
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| 36. | slide prevention |
| 防止滑移 |
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| 37. | prevention of interference |
| 防止干扰 |
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| 38. | conservation of soil against erosion |
| 防止水土流失 |
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| 39. | nuclear non proliferation |
| 防止核扩散 |
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| 40. | accident prevention |
| 事故防止 |
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