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So, if you look at any engineering system, the performance of that engineering system is a function of its design and its construction.
如果你们观察过工程系统，工程系统的性能就是,它的设计和构造的功能。
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It has the function, in other words, of negating its own meaning in another semiotic system, in this case the semiotic system of the stoplight.
也就是说，他有这样那样的功能，在不同语义系统中表示的甚至完全相反，就像红灯表示的这些不同含义一样。
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The immune system that we're used to thinking about is called the adaptive immune system, and the adaptive immune system does just that.
我们过去认识的免疫系统部分,现在被称为获得性免疫系统,获得性免疫系统功能如下
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They're small molecules that - whose principal function in the body is to carry signals from one cell in the nervous system to another.
它们都是小分子,在体内主要功能是在,神经系统内将信号,从一个细胞传导到另一个细胞
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It's not that all these layers are wrapped around the nervous system and the endocrine system.
不是所有功能,都围绕着神经系统和内分泌系统展开的
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These two systems which are shown in the core of this diagram really are responsible for regulating and exchanging information between the other organ systems.
在这张图的中心画的就是这两个系统,它们的功能是调节其他系统,并与之交换信息
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Not just an amplification system that you put in your ear, but actually an implant that replaces the function of an organ inside your ear.
人工耳蜗不是一个简单的,植入耳朵的扩音系统,而是一种,能替代听力器官功能的移植物
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It's the study of existing, conventional, communicative systems.
它是关于现存的，常用的，有交流功能的系统的研究。
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Our immune system's function is to keep us healthy in the face of an environment where there are lots of things that could potentially harm us.
我们免疫系统的功能就是保持自身健康,在面对危机四伏的环境时,使我们免受伤害
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That's what leads to some of the complexity of function of the nervous system.
这就是导致,神经系统功能多样性的原因
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I'm using it just to make the point, which you already know about; that the nervous system is complex in it performs a complex set of functions.
我想通过这张图片阐述一些,你们已经知道的知识,即神经系统是一个,功能复杂的复合体
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This will be the first real example where we've talked about the physiology of an organ system together with engineering approaches to modulate that organ, and that will continue throughout the semester.
届时我们将第一次真正地把,器官系统生理学,与调节器官功能的工程学方法结合起来,这方面内容将贯串我们整个学期
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We're going to talk about those in more detail in a couple of weeks when we talk about the immune system because these are the cells that perform and regulate the functions of our immune system that protect us from disease.
在后几周的有关免疫的课程上,我们会详细说明的,因为我们免疫系统的功能,要依靠这些细胞去完成和调节,它们使我们免受疾病侵害
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The main goal of the respiratory system is to bring fresh in so that you can extract oxygen from it, and blow used air out so that you can rid of carbon dioxide which is the end product of carbon metabolism inside our bodies.
呼吸系统的主要功能是,吸入新鲜空气,以便获得空气中的氧气,呼出废气,以便排出二氧化碳,二氧化碳是人体内碳代谢的终产物
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