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时差N小时:近亲生育的危害(上)

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Fans of classic movies will remember the famous dueling banjos scene in Deliverance, the story of four city friends who take an ill-fated boating trip down a backwoods Georgia river. As the friends set out, one of the friends challenges a local boy with a banjo to see who can play faster. At the end of the song, the camera zooms in to reveal the boy’s diseased, inbred features.

经典影片《激流四勇士》的粉丝一定还记得著名的五弦琴决斗场面吧!这部电影讲述的是四个都市朋友乘着独木舟沿着未开垦的乔治亚河冒险,一路上状况不断。刚出发的时候,其中一个朋友挑战一个当地男孩,比赛谁弹五弦琴更快。曲终,镜头推向男孩,揭示了男孩因近亲生育导致身体出现病态的事实。

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Such images have contributed to the taboo against marriage between first cousins. Geneticists explain that since closely related persons are more likely to harbor identical genetic mutations, their children have a greater chance of being born with defects.

这样的一幕助长了禁止近亲结婚的风气。遗传学者解释称,近亲更有可能携带相同基因突变的信息,他们的孩子先天缺陷的风险更大。
But such risks might be overstated. According to one study, children from first cousin marriages are only 1.7 to 2.8 percent more likely to be born with serious birth defects than children of conventional marriages. Although the risk is still significant, it is lower than previously thought.
但是,这一风险似乎被夸大了。据一项研究显示,表亲婚后的孩子比非近亲婚后的孩子出现先天严重缺陷的几率仅高出1.7%至2.8%。尽管风险依然存在,但是没之前预想的严重。

译文来自可可英语

重点单词   查看全部解释    
previously ['pri:vju:sli]

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adv. 先前,在此之前

 
related [ri'leitid]

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adj. 相关的,有亲属关系的

 
scene [si:n]

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n. 场,景,情景

 
classic ['klæsik]

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n. 古典作品,杰作,第一流艺术家
adj.

 
harbor ['hɑ:bə]

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n. 海港,避难所
vt. 庇护,心怀,窝藏<

 
reveal [ri'vi:l]

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vt. 显示,透露
n. (外墙与门或窗之间的

 
identical [ai'dentikəl]

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adj. 相同的,同一的

 
conventional [kən'venʃənl]

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adj. 传统的,惯例的,常规的

 
genetic [dʒi'netik]

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adj. 基因的,遗传的,起源的

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