通常有两种表示法：①分别计算雌雄个体各自占种群总数量的百分比；②常用的是用雄性个体数对雌性个体数的百分比计算性别比例，有时也可直接用雄性个体数比上雌性个体数。除总性别比例外，出生性别和年龄性别比例也是重要指标。
当然，那里也有很多优秀的单性别学校，但正如这些谨慎的研究评论所表明的，使它们优秀的并不是单性别构成。
Of course, there're many excellent single-sex schools out there, but as these careful research reviews have demonstrated, it's not their single-sex composition that makes them excellent.
四个调查县情况基本与此都一致，性别构成差别没有统计学意义。
The results were almost the same in the four counties. The gender structure difference has no statistical significance.
此外由于剧中角色的性别构成，探究幽默与性别的关系就变得十分有趣。
Moreover, due to gender composition of characters, the relationship between gender and humor is interesting to explore.
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