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| 51. | It later became apparent that rabbits were developing a degree of resistance to this disease. |
| 后来，兔子显然对这种疾病产生了一定的免疫力。 |
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| 52. | RATAN作为一家具有丰富经验的经济型企业，为您提供完成生产、工,调节对象,藤条,卖、售范围内效果显著的、价值的产品。 |
| Information on the enterprise RATAN and their services, like Manufacturing and Furniture on one hand and Rattan and Sale on the other, is available in the firm profile. |
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| 53. | Older dogs, however, have usually become immune to the parasite. |
| 年纪大一点的狗基本上都会对蛔虫有免疫力。 |
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| 54. | The ability to respond immunologically to bacteria, viruses, or other antigenic agents. |
| 免疫力对细菌、病毒或其它抗生药的免疫反应能力 |
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| 55. | Methods Isolation of Rickettsia tsutsugamushi by animal,serology indentification,rest of virulence and immunity. |
| 方法 动物分离 ,血清分型 ,毒力测定及免疫力试验。 |
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| 56. | Diphtheria is treated with an antitoxin that neutralizes the toxin and produces long-term immunity. |
| 治疗方式为及时注射白喉抗毒素,产生长期的免疫力。 |
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| 57. | Immunodeficiency: Defect in immunity that impairs the Body's ability to resist infection. |
| 免疫不全:免疫力的缺陷削弱身体抵抗感染的能力。 |
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| 58. | a mixture of toxin and antitoxin used to immunize against a disease. |
| 用来提高抵抗疾病的免疫力的毒素和抗毒素的混合物。 |
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| 59. | were developing a degree of resistance to this disease, |
| 兔子对这种疾病已产生了一定程度的免疫力， |
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| -- 来源 -- 新概念英语第四册 - A man-made disease |
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| 60. | These irradiations may cause the leukopenia, reduce the human body immunity. |
| (4)这些射线会使白血球减少，降低人体的抵抗力和免疫力。 |
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