实验中，一位母亲被要求以正常的方式与她的孩子互动，然后面无表情，不给他们任何视觉上的社交反馈。
In it, a mother is asked to interact with her child in a normal way before putting on a blank expression and not giving them any visual social feedback.
有些精神病患者不能正常地与人进行感情交流，科学家认为，这种特点有可能与对回报的渴望过于强烈以及不能够注意到别人脸上忧虑的表情有关。
Psychopaths can't connect emotionally. Researchers have thought that trait may be connected with an outsized drive for reward and an inability to register fearful expressions in others' faces.
当看到快乐或忧伤表情的图片时，正常青少年的脑部会发光。
A typical teenager's brain lights up when they see pictures of happy or sad faces.
正常情况下，我们无法长时间保持面部表情，而且自然的表情(尤其是笑脸)有规定的时间，一般为0.5 -4秒。
We do not normally hold some facial expressions for long periods and natural expressions (notably smiles) have definable durations, typically between about half a second and four seconds.
针对表情正常的正面人脸图像，提出了一种基于图像差值的识别算法。
This paper proposes a kind of face recognition algorithm based on image difference among the front face pictures with normal expression.
艺用人体解剖学是通过剖析正常的人体组织，从中获得对人体造型结构，表情及运动规律的科学知识。
The skill with the anatomy is through the analysis normal body tissue, obtains to the human body modeling structure, the expression and the law of motion scientific knowledge.
钱德勒想保持正常表情，做了个“没事”的手势，但很明显已不能呼吸。
Chandler tries to save face and makes the 'OK' sign with his hands, while obviously unable to breathe.
正常人有时会被言语牵着走，尽管听不懂语言，但失语症患者能更好的理解人类的表情。
Normal people may get carried away by words. Aphasics seem to understand human expressions better, though they cannot understand words.
这样，科学家就能够测量大脑内不同区域是如何活动、并不同区域间是如何进行交流的；并将其面部表情呈现愤怒时的大脑活动与呈现悲伤及正常时的做出对比。
They were able to measure how different brain regions reacted and communicated with one another when the volunteers saw angry faces, as opposed to sad or neutral faces.
Suggested answer：我也喜欢生人脸上那瞬间的震惊表情、匆忙的微笑和他们竭力装出的“正常脸色” 。
I also love the split-second shocked expression on the new people, the hasty smiles and their best imitations of what they think of as their "normal faces".
因经常与他们交谈，你将学到的表情和话，可以用在正常的英语会话？
By having regular conversations with them, you will learn expressions and words that are used in normal English conversations? Not expressions out of a textbook.
因经常与他们交谈，你将学到的表情和话，可以用在正常的英语会话？
By having regular conversations with them, you will learn expressions and words that are used in normal English conversations? Not expressions out of a textbook.
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