Study of the origins and distribution of human populations used to be based on archaeological and fossil evidence.
对人类种群起源和分布的研究曾是基于考古和化石证据。
A human study has found strong links between BPA levels and semen quality, and the findings are not looking good.
现在，一项人类研究发现了双酚A含量和男性精子质量之间有密切关联，结果并不乐观。
Doctors study the structure of the human body.
医生研究人体构造。
It can study the movements of human players and the speeds of the ball.
它可以研究人类球员的动作和球的速度。
The study of the cultural history of smell is, therefore, in a very real sense, an investigation into the essence of human culture.
因此，对嗅觉文化史的研究，从真正意义上讲，是对人类文化本质的调查。
A recent study shows that meat consumption is one of the main ways that human can damage the environment, second only to the use of motor vehicles.
最近的一项研究表明，对肉类的消费是人类破坏环境的主要途径之一，仅次于机动车的使用。
When you want to study ancient human and Neanderthal remains, there's a big issue of contamination with contemporary human DNA.
当你想要研究古人类和尼安德特人的遗骸，一个大问题是当代人类的 DNA 受到的污染。
As the human study suggests, another reason for dolphins keeping their eyes open during sleep is that they can look out for predators while asleep.
正如人类研究表明的那样，海豚在睡觉时睁着眼睛的另一个原因是，它们可以在睡觉时留意捕食者。
An in-depth study of differences between human languages contributes to a true understanding of cognitive differences between cultures.
对人类语言差异的深入研究有助于人们真正理解文化之间的认知差异。
One recent study attempted to calculate the extent of this "ecological overshoot of the human economy".
最近的一项研究试图对这种“人类经济对生态透支”的程度进行计算。
Our second study is about music, for this study researchers play music to babies through speakers located on either side of a human face.
我们的第二个研究是关于音乐的，在这项研究中，研究人员通过位于人脸两侧的扬声器向婴儿播放音乐。
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。
It's not only the study of human population, but the populations of non-human species, including viruses.
这不仅是对人类种群的研究，也是对非人类种群（包括病毒）的研究。
Dogs may indeed be able to distinguish between happy and angry human faces, according to a new study.
根据一项新的研究，狗也许确实能够分辨人类高兴和生气的脸。
The study showed the animals had figured out how to apply what they learned about human faces during training to new faces in the testing stage.
研究表明，这些动物已经知道如何在测试阶段将它们在训练中所学到的人脸知识应用到新面孔上。
"With our study, we think we can now confidently conclude that at least some dogs can distinguish human facial expressions," Muller told Live Science.
穆勒告诉《生活科学》说：“通过我们的研究，我们认为我们现在可以自信地得出结论，至少有些狗可以分辨人类的面部表情。”
Dr. Susanne Shultz, an evolutionary biologist from the University of Manchester, said the study was praiseworthy in seeking to enrich our knowledge of the evolution of human language.
曼彻斯特大学的进化生物学家苏珊娜·舒尔茨博士说，这项研究是值得称赞的，它试图丰富我们对人类语言进化的知识。
Anthropologists study human cultures and societies.
人类学家研究人类的文化和社会习俗。
The human study was done by Yuzo Ninomiya, a neuroscientist at Kyushu University, in Japan.
在人体上的研究由日本九州大学神经系统科学家Yuzo Ninomiya等人完成。
It's a big leap from a mouse study to a human study, of course - and an even bigger leap to consider developing a G9a-based treatment for addiction.
当然，从对老鼠的研究再到对人的研究中间还有很久的路要走，而且研发基于G9a的戒除毒瘾的疗法更非一夕之功。
An association that is demonstrated in more than one human study and consistent among the studies.
相关性在多项人体研究中得到了证实且研究结果具有一致性。
The answer, from activists and academics who study the human impulse, is blunt.
活动人士和研究人类动机的学者给出的答案直截了当。
The answer, from activists and academics who study the human impulse, is blunt.
活动人士和研究人类动机的学者给出的答案直截了当。
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