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In 16 of the 19 polygynous species in their sample, males of all ages were much more likely to die during any given period than were females.
在19个一夫多妻制物种样本中，16个物种的雄性中，各个年龄阶段的样本在给定的时间段中都比雌性更易死亡。
We apply the Trivers-Willard prediction - that mothers in poor condition will overproduce daughters - to a novel measure of condition, namely wife rank within a polygynous marriage.
Trivers-Willard 假说提出：贫穷的母亲更容易生女孩。 我们将其应用到一个研究母亲状况的新方法中—即在一夫多妻制家庭中妻子的地位。
In polygynous families in the Novels of Ming and Qing Dynasties, the positions of wife, concubine and servant girls were different.
作者通过对明清小说中家庭女性地位的研究，认为在男性多偶家庭中，妻、妾、婢的地位高低有别。
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