That is to say, it is not a system of signs understood as stable relationships between a concept world and a world of signifying.
也就是说,它不是一个符号系统,这个符号系统被理解为,概念世界和指示世界间的稳定的关系。
And that concept is really to either write information into the brain and the nerve system or read information out of the brain and the nerve system.
这一概念实际上是指,向大脑或者神经系统输入信息,或者读出大脑和神经系统以外的信息。
It was the first place where the concept of stem cells was developed, in that if one looks carefully one can find immature cells in the bone marrow.
这是干细胞概念的发祥地,如果仔细观察造血系统,就能找到骨髓中的未成熟细胞
So claims that--about the failure of conservation in children at different ages could be easily tested and systematically tested, and in fact, there's a lot of support for them.
关于不同年龄阶段的儿童,缺乏守恒概念的论断,能够很轻易的得到系统的检验,事实上,有相当多的证据支持这些论断
I'm going to talk about - take sort of the general concepts that we talked about last time and talk about how they apply in two physiological systems, the nervous system first and then the immune system.
我将要谈到几个基本的概念,我上节课已经讲过一些了,再讲讲这些概念在两个生理系统中的应用,首先是神经系统然后是免疫系统
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