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51. | immunity to a particular disease that is not innate but has been acquired during life; immunity can be acquired by the development of antibodies after an attack of an infectious disease or by a pregnant mother passing antibodies through the placenta to a fetus or by vaccination. |
| 不是天生的而是后天获得的对某一疾病的免疫力。 |
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52. | To be of service to; aid. |
| 对…有帮助;帮助 |
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53. | 帮助训练小朋友的想像力和手眼协调能力。 |
| Age for3+) Build a shop, city, farm, fantasy land and more at your own wish! This game helps develop a little kid's imagination and eye-hand coordination. |
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54. | lend a hand; help |
| 帮助 |
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55. | 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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56. | "Some diseases, such as whooping cough and chicken pox, usually leave a child immune, or protected, for the rest of his life." |
| 某些疾病,如像百日咳和水痘,通常让孩子产生终生免疫力。 |
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57. | 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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58. | Helping others is helping oneself . |
| 帮助别人就是帮助自己。 |
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59. | 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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60. | help someone to; assist someone to |
| 帮助.. |
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