环境科学专业英语6

1、Water Environment BasicsJinyan YangJinyan Yang22-11-2010New Words & Phrasesnutrient: A source of nourishment, especially a nourishing ingredient in a food.营养品，滋养物：营养的来源，尤指食物中的营养成分. percolate: To cause (liquid, for example) to pass through a porous substance or small holes; filter.过滤. soluble: Th

2、at can be dissolved, especially easily dissolved.可溶的.photosynthesis: The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source. Most forms of photosynthesis release oxygen as a byproduct.光合作用：在绿色植物或其它有

3、机物中，以光作为能量来源，用二氧化碳和水合成碳氢化合物的过程。大部分形式的光合作用都释放氧气作为副产品. bioassay：Determination of the strength or biological activity of a substance, such as a drug or hormone, by comparing its effects with those of a standard preparation on a test organism.生物鉴定：通过将其结果与对试验生物所做标准制剂的比较，来鉴定一种物质的强度或生物活性，如药或激素amino: Relati

4、ng to an amine or other chemical compound containing an NH2 group combined with a nonacid organic radical. 氨基的.glucose：A monosaccharide sugar, C6H12O6, occurring widely in most plant and animal tissue. It is the principal circulating sugar in the blood and the major energy source of the body.葡萄糖：一种单

5、糖，C6H 12O 6，广见于大多数动植物组织。它是血液中基本的循环糖和人体等主要能量来源.Translation1) Point sources are most readily identified with industrial sources such as manufacturing, processing, power generation, and waste treatment facilities where pollutants are delivered through a pipe (discharge point).2) We need not only adequa

6、te supplies of water but adequate supplies of water of a certain quality to meet the needs of society and the economy such as drinking, preparation of food, hygiene purpose, and so on.3) DO is produced by diffusion from the atmosphere, aeration of water as it passes over falls and rapids, and as was

7、te product of photosynthesis.4) The BOD test is widely used to determine the pollutional strength of domestic and industrial wastes in terms of the oxygen that they will require if discharged into natural watercourses in which aerobic conditions exist.5) The BOD test is essentially a bioassay proced

8、ure involving the measurement of oxygen consumed by living organisms (mainly bacteria) while utilizing the organic matter.6) Elevated levels of DO also make drinking water tastes better but can be corrosive to water pipes.Questions1) How many categories can sources of water pollution be classified?2) What is nonpoint source (NPS) pollution associated with?3) What does the term “decomposable” mean?4) Why is DO so important?5) What is the purpose of BOD test?6) What is the COD based on?7) Why are COD