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| 51. | rust preventive oil |
| 防锈油|防腐油 |
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| 52. | rust of alfalfa |
| 苜蓿锈病 |
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| 53. | rust fungus causing rust spots on apples and pears etc. |
| 在苹果和梨等的表面造成铁锈斑点的铁锈菌。 |
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| 54. | rust preventing medium |
| 防锈介质 |
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| 55. | Why does steel rust? |
| 为什么钢铁会生锈呢？ |
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| 56. | rust disease fungi |
| 锈病菌类 |
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| 57. | rust-eaten; rusty |
| 锈蚀 |
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| 58. | rust fungi: parasitic fungi causing rust in plants; sometimes placed in. |
| 锈菌；使植物生锈的寄生菌。 |
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| 59. | rust-resisting property |
| 抗锈性能 |
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| 60. | stem rust of wheat |
| 小麦秆锈病 |
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