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conception n. 受精 chronic adj. 长期的，持续的 questionnarie n. 调查表 quartile n. 四分位值 miscarry v. 流产 pathological adj. 病理的 strapping adj. 伟岸的，魁梧的 fetus n. 胎儿 难句突破： Moreover, a study carried out eight years ago by researchers at the University of Aarhus, in Denmark, revealed that women who suffered the death of a child or spouse from some catastrophic illness around the time they conceived were much more likely to give birth to girls than to boys. [主体句式] A study revealed that [结构分析]这是一个复合句，主语后面是一个过去分词短语做定语;revealed后面的宾语从句比较复杂，从句的主体句式为women or spouse were likely to ，状语中that 引导的定语从句用来修饰time, 第一个主语women后有一个以who引导的定语从句。 [句子译文] 而且，八年前奥尔胡斯大学研究者们做的一项研究也表明，经过头胎死亡经历或配偶在其怀孕期间患上一些灾难性疾病的妇女更有可能生女孩。 If a mothers stress adversely affects the development of her fetus then selectively aborting boys, rather than wasting time and resources on bringing them to term, would make evolutionary sense. [主体句式] If then selectively aborting boyswould make sense. | 
