生物医学论文英语读写教程

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课后翻译答案要么 Reading A 1 1.细胞的专化程度越高，失去有丝分裂能力的可能性越大。神经元是体内分化程度最高的，一旦神经系统的发育得以完成，它们就失去了分裂和繁殖的能力。 2.在此情况下，体内有属于同一谱系的母细胞，这些细胞尚未分化到失去分裂能力的程度。它们已经得到充分的分化，因而它们产生的子细胞限定于同一细胞体系；但尚未分化到丧失积极增生潜力的程度。 Reading B 1 , the rate of cell reproduction and the process of cell differentiation are precisely controlled so that both of these mechanisms cease once the appropriate numbers and type of cell are formed. walls are very thin so that oxygen and carbon dioxide can easily get through. cells, especially those of the central nervous system and the heart, are extremely sensitive to low blood levels of oxygen results in serious damage. undifferentiated stems cells that can be triggered to enter the cell cycle are different from the cells that continue to divide and reproduce. the blood there are many red blood cells that serve as vehicles for carrying oxygen. neurons, there are other well-differentiated cells that are unable to divide. Reading A 2 1. 虽然发炎的影响因其令人不快和造成不适而常被认为是不好的，但发炎过程就其实质而言对人体却是有利的，它使人能应付日常压力的影响。 2 .小小一块局部红肿就足以防止蚊叮产生伤害，而严重的情况 ，如阑尾炎，则可引起发烧、白细胞增多，乃至大量体液和蛋白质聚集到炎症部位。 Reading B 2 all pathogens pose potential threats if they gain entry to the body, the chances of this occuring are actually quite small. pain is often not considered an actual body defense mechanism, the role of pain in the body’s response to invasion can not be ignored. pain means that the pain can be present in a given place although the source may be elsewhere. the process continues, monocytes exit the blood and mature into macrophages in the tissue environment. body temperature rises, the body is stimulated to produce more white blood cells. your body produces its own antibodies, you will not have to worry about subsequent exposure to the disease. Reading A 3 1 晶状体中心浑浊可能隔断视轴，造成可见到两个或多个模糊视象的视觉缺损。在进行眼底镜检查时，白内障可表现为肉眼可见的遮住瞳孔的混浊，或者 由眼底红色背景衬映的混浊。 2 美国眼科学会已就何时应进行手术制定了标准：即病眼的最佳矫正视觉敏感度在20/50或以下。然而，如果有妨碍正常活动的眩目或无法正常工作，或者白内障有可能导致其他眼病，如继发性青光眼和色素层炎，则最佳矫正视力在20/40甚至更好一些，仍然可能适宜进行手术 Reading B 3 has been proved that most congenital cataracts are not progresive and are not dense enough to cause significant visula impairment. has been reported that overexposure to heat or to ionizing radiation may cause traumatic cataracts. was thought by some that much use of the eyes for school work may have played a part in causing myopia; but it has been found that people who do not do any reading suffer from the problem to as great a degree. within th eye may increase, slowly destorying the optic nerve. your eyes more often at work spreads a tear film over the eyes, keeping them moist. the ciliary muscle contrats, the ligament relaxes and the lens becomes more nearly spherical, enabling the eye to focus on objects that are nearer to the eye. Reading A 4 1.这种解剖学分类是互补的但是从属于病因分类，因为尽管大叶性肺炎常常由肺炎链球菌引起但除了它也能有许多其它的微生物引起，因此在公布可能感染的因素时作为了唯一一个有限的涵义。 2.为了使特异性抗菌治疗直接攻击它，因此我们应该作出每一份合理的努力去确立每一个肺炎病人的可能致病的病原微生物身份，因为如果没有这个信息，一些病人用别的方式治疗的将不会痊愈。 Reading B 4 the infectious cause is not known it is useful to consider whether the pneumonia is community-acquired or nosocomial. anatomical classification of pneumonia concers only the extent and distribution of the inflammatory process regardless of whether it is caused by Streptococcus pneumoniae or by other organisms. 肺炎的解剖学分类只涉及炎症过程的程度和分布，而不管她是由肺炎球菌还是由其他细菌引起。 general public should be better informed about whether the air they breathe is fresh and clean. 公众应当更好地了解他们呼吸的空气是否新鲜和干净。 4. Recent studies have shown that hospital-acquired infections are far more frequent than was originally thought. 新近的研究表明，由医院环境获得的感染壁原先认为的情况要多得多。 5. Adolescents are apparently more immune to certain respiratory infections than are the elderly members of the community. 青少年显然比起社区的老年人对某些呼吸道感染有更多的免疫力。 6. Bronchopneumonia, in which the disease process is scattered here and there throughout the lung, is more common than lobar pneumonia. 疾病过程散见于整个肺部的支气管炎，比大叶性肺炎更常见。 Reading A 5 1.失去降低PH能力或酸化尿液的人，二价和三价的磷酸盐结合钙形成磷酸钙结石会增加。尿酸结石的形成另一方面会在酸性尿液中增多，结石的生成可以通过用碱性钾盐提高尿液PH到～来减少。 2.高质量光学设备的发展，使用它使整个过程可以进行的更轻松，也使它的成果提高了。这个过程是在X线透视检查的引导下进行的，涉及到多种工具用来扩大输尿管，抓住和移动结石。 Reading B 5 1. Radilogical studies using a contrast medum are done to determine the position of the stone and direcdt the placement of the ureterosfope. 2. If a certain takes a drug overdose and loses consciousness, physcians can test the urine to identify the drug taken. 3. The cluster of capillaries within bonethe wall the bulb of 4. The speed at which urinary calcium is excreted drops when renal function is impaired. 5. The tract through which a nephroscope is inserted into the renal pelvis needs to be dilated. great difficulty in the treatemnbt of asthmja is to isolate the particular substance which the patient is allergic.

这个简单啊。你可以到PubMed中下载。输入关键词，然后检索即可。

你可以去创新医学网上看看，而且还有翻译服务。