難句突破：
(1) 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.
[主體句式] A study revealed that...
[結(jié)構(gòu)分析]這是一個(gè)復(fù)合句，主語(yǔ)后面是一個(gè)過(guò)去分詞短語(yǔ)做定語(yǔ)；revealed后面的賓語(yǔ)從句比較復(fù)雜，從句的主體句式為women or spouse were likely to ...，狀語(yǔ)中that 引導(dǎo)的定語(yǔ)從句用來(lái)修飾time, 第一個(gè)主語(yǔ)women后有一個(gè)以who引導(dǎo)的定語(yǔ)從句。
[句子譯文] 。而且，八年前奧爾胡斯大學(xué)研究者們做的一項(xiàng)研究也表明經(jīng)過(guò)了第一個(gè)孩子死亡的婦女或在懷孕期間經(jīng)歷過(guò)一些災(zāi)難性疾病的夫婦更有可能生女孩。
(2) If a mother's 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.
[主體句式] If... then selectively aborting boys...would make sense.
[結(jié)構(gòu)分析] 這是一個(gè)帶有條件狀語(yǔ)從句的復(fù)合句，主語(yǔ)由現(xiàn)在分詞短語(yǔ)構(gòu)成。
[句子譯文]如果母親的壓力對(duì)胎兒的發(fā)展起了相反的影響，選擇性地將男孩流產(chǎn)，而不是浪費(fèi)時(shí)間和資源將他們養(yǎng)足月，那么就能說(shuō)明進(jìn)化的問(wèn)題了。
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