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| 21. | A degree of collective immunity may be observed. |
| 可见到一定程度的群体免疫力。 |
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| 22. | It has functions softening cardio-cerebral vessels, improving metabolism, relieving varicosity, reducing blood sugar, beautifying and nourishing face, working against sensitivity, improving immunity and adjusting plant nerve, etc. |
| 软化心脑血管，促进新陈代谢，缓解静脉曲张，降低血糖，具有美容养颜、抗过敏、提高免疫力、调节植物神经等功效。 |
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| 23. | The hepatitis B vaccine confers lifelong immunity against the chronic illness. |
| 乙型肝炎疫苗能为身体提供永久免疫力。 |
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| 24. | He says the amino acid L-theanine could be removed from tea and used as a drug to strengthen the body's defenses. |
| 他还说，L－茶氨酸可以从茶叶中提取并制成药剂，从而帮助人体提高免疫力。 |
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| -- 来源 -- 交互式慢速英语-夏季号 - Tea May Help Fight Infection |
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| 25. | immunologic deficiency disease |
| 免疫力缺陷病;免疫缺陷病 |
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| 26. | People with AIDS lose their body's defense system. |
| 艾滋病患者会失去身体的免疫力。 |
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| -- 来源 -- 交互式慢速英语-秋季号 - A World Tuberculosis Campaign |
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| 27. | This vaccine will give you immunity for two years. |
| 接种这种疫苗可有两年免疫力。 |
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| 28. | Improve sleeping appetite and immune ability. |
| 可以改善睡眠，增进食欲，提升免疫力。 |
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| 29. | Functions: to control blood fat level, prevent cardio-cerebral diseases, be anti-oxidation, delay senescence, maintain normal metabolism of fat in body and improve immunity of body. |
| 功能：控制血脂水平，防止心脑疾病，抗氧化，延缓衰老，可维持体内脂肪正常代谢，提高肌体免疫力。 |
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| 30. | She thinks women may be immuned to lung cancer. |
| 她认为女性可能对肺癌有免疫力。 |
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