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41. | prevention of fraud |
| 防止舞弊 |
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42. | control of lesion |
| 防止损害 |
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43. | wear prevention |
| 防止磨损 |
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44. | Avoid a bubble economy (too many bubbles in the economy) |
| 防止泡沫经济 |
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45. | offensive odor control |
| 臭气防止 |
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46. | prevention of cycling |
| 循环防止 |
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47. | antisyphonage pipe |
| 防止虹吸管 |
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48. | prevention of silica dust |
| 防止矿尘 |
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49. | preserve from decay |
| 防止腐烂 |
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50. | to avoid a conflict (with) |
| 防止冲突 |
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