The sex of the embryo is predetermined at fertilization.
胚胎的性别早在受精时就决定了。
The new technique has been used to identify the sex of fetuses.
这项新技术已被用来鉴定胎儿的性别。
A female stores sperm and can determine the sex of each egg she lays by fertilizing it or leaving it unfertilized.
雌性储存精子，可以通过受精或不受精来决定每一个卵细胞的性别。
Immediately relevant to game theory are the sex ratios in certain parasitic wasp species that have a large excess of females.
与博弈论直接相关的是某些具有大量过剩雌性的寄生蜂种类的性别比例。
Second, because only male deer rub, the buck rub and its associated chemicals indicate the sex of the deer producing the rub.
第二，因为只有雄鹿会做出摩擦动作，摩擦动作和与之相关的化学物质表明了制造擦痕的鹿的性别。
During the third month of pregnancy the sex of the child becomes determinable.
孩子的性别在妊娠期第三个月便可查明。
The reason it is prohibited is that it leads far too easily to stereotyping and sex discrimination.
它被禁止的原因是它很容易导致刻板印象和性别歧视。
Participants were balanced across the three groups for age, sex, educational back-ground, severity and duration of depression, and use of antidepressants.
这三组参与者在年龄、性别、教育背景、抑郁症的严重程度和持续时间以及抗抑郁药物的使用上保持平衡。
Participants were balanced across the three groups for age, sex, educational background, severity and duration of depression, and use of antidepressants.
就年龄、性别、教育背景、抑郁症的严重程度和持续时间以及抗抑郁药物的使用这几点来说，这三组参与者都保持了平衡。
"There's a mountain of evidence proving the importance of sex influences at all levels of brain function," he told The Seattle Times.
他在接受《西雅图时报》采访时表示，“大量证据证明，性对大脑各方面功能有影响。”
There were no sex differences in the life and environmental sciences.
在生命科学和环境科学中没有性别差异。
In the public sector, researchers have found either no sex differences in mobility or a larger female disadvantage in lower grades.
在公共部门，研究人员发现，在流动性方面没有性别差异，或者女性在较低的年级中处于更大的劣势。
Behind the differences in sex, skin tones and mother tongues, there are common attitudes, expectations and ambitions which risk creating a set of clones among the business leaders of the future.
在性别、肤色和母语的差异背后，存在着共同的态度、期望和抱负，这些都有可能在未来的商界领袖中催生出一套复制品。
One study found that if you are interviewed by someone of the same sex, they may be less likely to employ you if they judge that you are more attractive than they are.
一项研究发现，如果你被同性面试，如果他们认为你比他们更有吸引力，他们就不太可能雇用你。
Our level of attraction to the opposite sex has more to do with our inner confidence than how we look.
我们对异性的吸引程度更多地与我们内心的自信有关，而不是外貌。
I've personally never subscribed to the view that either sex is superior to the other.
我个人从未持有过一种性别比另一种性别优越的观点。
Political sex scandals are all grist to the mill of the tabloid newspapers.
政界的性丑闻对通俗小报总是多多益善。
A case in point is the study by Linda Sax at UCLA, who used data from a large national survey of college freshmen to evaluate the effect of single-sex versus coeducational high schools.
加州大学洛杉矶分校的琳达·萨克斯的研究就是一个恰当的例子，她利用了一项全国性的大一新生调查来评估单性别高中和男女混合高中的效果。
Another study of high school social networks found less bullying and aggression the higher the density of mixed-sex friendships within a given adolescent network.
另一项关于高中社交网络的研究发现，在特定的青少年网络中，异性友谊密度越高，欺凌和攻击行为就越少。
The most successful groups of land plants are those that evolved methods of fertilized sex cell dispersal that are independent of water and structures that protest developing embryos from drying out.
最成功的陆生植物群体是那些进化出了受精性细胞散布方法的群体，这些方法不依赖于水和防止发育中的胚胎干涸的结构。
Are teenagers in particular, do you think, sheltered too much from contact with the opposite sex?
你是否认为，青少年尤其受到了过多的保护以避免与异性接触？
When it comes to boys in particular, the data show that single-sex education is distinctly unhelpful for them.
尤其是讲到男孩，数据显示，单性别教育显然对他们没有帮助。
They also examined the fossilized bones of those three types of dinosaurs that were found on or near nests to determine their sex.
他们还研究了在巢穴里或巢穴附近发现的那三种恐龙的骨骼化石，以确定它们的性别。
In the study, Tel Aviv University researchers searched for sex differences throughout the entire human brain.
在这项研究中，特拉维夫大学的研究人员在整个人脑中寻找性别差异。
There was broad agreement between boys and girls on which instruments each sex should play and the reasons vary.
男孩和女孩之间对于每种性别应该演奏什么乐器有广泛的一致意见，原因也各不相同。
The US Supreme Court frowns on sex-based classifications unless they are designed to address an "important" policy interest.
美国最高法院不赞成基于性别的分类，除非它们是为了解决“重要”的政策利益。
But any discussion of gender differences in children inevitably leads to this debate, so I felt compelled to dive into the research data on single-sex schooling.
但任何关于儿童性别差异的讨论都不可避免地引发了这场争论，所以我觉得有必要深入研究一下有关单性别学校教育的研究数据。
I wonder if you could say then in a few words what the advantages are for a girl at a single-sex school.
你是否可以简单地说一下在单性别学校读书对女孩来说有什么好处？
The second line of research often used to justify single-sex education falls squarely within my area of expertise: brain and cognitive development.
经常被用来为单性别教育辩护的第二条研究路线恰恰在我的专业领域之内：大脑和认知发展。
The second line of research often used to justify single-sex education falls squarely within my area of expertise: brain and cognitive development.
经常被用来为单性别教育辩护的第二条研究路线恰恰在我的专业领域之内：大脑和认知发展。
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