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Gene therapy: Hello mothers, hello father (Oct 27th 2012)
译文见251楼
1、By far the largest is packed into the 23 chromosomes in the nucleus of an unfertilised egg.
难点：the largest的指代（指代the largest amount of genes in an egg）
2、And because mitochondria descend from a bacterium that, about 2 billion years ago, became symbiotic with the cell from which animals and plants are descended, they have their own, small chromosomes.
难点：descend from的理解，句子结构
句子结构：because mitochondria descend from a bacterium that, about 2 billion years ago, became symbiotic with the cell from which animals and plants are descended是原因状语从句。其中，mitochondria是主语，descend from谓语，a bacterium宾语，that引导的定语从句that, about 2 billion years ago, became symbiotic with the cell from which animals and plants are descended修饰先行词bacterium。该定语从句中，先行词作主语，became symbiotic with the cell from which animals and plants are descended是系表结构。在该系表结构中，from which引导的定语从句from which animals and plants are descended修饰先行词cell（即animals and plants are descended from the cell）
3、But all of the mitochondria in a human body are descended from those in the egg from which it grew.
难点：be descended from的理解（= be related to，注意不是descend from）
4、To find out whether mitochondrial transplantation could work in people (it has already been demonstrated in other species of mammal) Dr Mitalipov collected eggs from the ovaries of women with mutated mitochondria and others from donors with healthy mitochondria.
难点：work的理解
5、He then fertilised the result with sperm and allowed the fertilised eggs to start dividing and thus begin taking the first steps on the journey that might ultimately lead to them becoming full-fledged human beings.
难点：full-fledged的理解
6、However, just over half of the resulting zygotes—as the balls of cells that form from a fertilised egg’s early division are known—displayed abnormalities.
难点：division的理解，display abnormalities的理解与翻译
7、Each species has its quirks, and if mitochondrial transplants were to become routine, the quirks of humans would, no doubt, quickly become apparent.
难点：quirk的理解与翻译，routine的理解与翻译，apparent在句意中的理解与翻译
8、Dr Mitalipov has little doubt that his zygotes could be brought to term if they were transplanted into a woman’s womb.
难点：be brought to term的理解与翻译
9、That experiment, though, is illegal—and, in the view of some, rightly so.
难点：and, in the view of some, rightly so的理解
10、But the fact that it now looks possible will surely stimulate debate about whether the law should be changed.
难点：it的指代（指代that his zygotes could be brought to term），句子结构
句子结构：the fact that it now looks possible是主语（it不是形式主语）
11、Not, perhaps, as classically conceived because no DNA is artificially modified.
难点：句意在语境中的理解
12、When Dr Mitalipov tested his zygotes, he could find no trace of mutated mitochondrial DNA in them, so the purpose of the procedure seems to have been achieved.
难点：trace的理解与翻译
13、Some worry about the consequences of a third adult being involved in the traditionally two-person process of parenthood—though the mitochondrial contribution is restricted to genes for energy-processing proteins and is unlikely to have wider ramifications on, say, family resemblance.
难点：转折点的理解
14、Some worry that three-parented individuals may themselves be worried by knowledge of their origin.
难点：themselves be worried的理解
15、But until recently such questions have been hypothetical.
难点：until recently的理解与翻译（译成“近来”或“至今”都与下文Now they are real.矛盾）
16、In the end, whether three-parent children are permitted will probably depend on the public “uggh!” factor.
难点：public “uggh!” factor的理解与翻译
17、If they are bad, the phrase “I told you so” will ring from the rafters.
难点：ring from the rafters的理解与翻译 |
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楼主
发表于 2012-11-19 16:55
楼主: !感-杠-问?
