大学英语的预习好帮手

II. Language Points

大学英语的预习好帮手

Proving safety is a tall enough order. (Para.13) Paraphrase: Proving safety is very difficult. … an approach that may circumvent some of these problems. (Para.14) circumvent: v. (fml) to avoid cleverly; to bypass e.g. (1) Ships are registered abroad to circumvent employment and safety regulations. (2) Motorists attempted to circumvent traffic jams. … thus highlighting the importance of proper differentiation … (Para.14) highlight: v. to emphasize e.g. Could you please highlight the problems of urban poverty at the meeting? … 97% of cells express genes ... (Para.16) express: v. to manifest (遗传学)显示，表现 e.g. Half of the people who inherit the gene express it. No one is even considering putting in any naïve ES cells. (Para.16) Paraphrase: No one is thinking about using any unspecialized cells. Cultured cells are often kept alive … (Para.18) culture: v. to grow in a specially prepared nutrient medium e.g. Scientists have succeeded in culturing these microorganisms in the lab. culture: n. 1) a special substance that is used to grow germs (营养基) 2) the act of developing the intellectual and moral faculties especially by education 3) the attitudes and behavior that are characteristic of a particular social group or organization e.g. (1) Animal cell culture became a routine laboratory technique in the 1950s. (2) He is a man of little culture. (3) The reason that the agency is doomed to inaction has something to do with the FBI culture. … introduce exotic animal viruses. (Para.19) exotic: a. from outside; foreign e.g. Now there are various kinds of exotic fruits on our market. … another potential downside to using mouse feeder cells. (Para.21) downside: n. (singular) disadvantage; the negative aspect e.g. (1) We face an option with a downside as well as benefits. (2) Unemployment, inflation and inequality are often the downside of a market economy. … may have been overstated. (Para.21) overstate: v. to exaggerate [antonym] understate e.g. He may have overstated his ability in the interview. … a prerequisite for safety … (Para.24)

大学英语的预习好帮手

III. Background Information