and put them into action or to engineer them in some way.

同实际应用或者某种工程学应用联系起来
So, we'll talk about that next time.

这些实践应用问题我们将在下节课讲解
I want to start with the nervous system.

我想从神经系统讲起
This is a picture of a neuron,

这是一幅神经元的图片
this particular neuron has been

这个特定的神经元
filled with a fluorescent dye so that it's colored green.

已经被荧光染料染成了绿色
I'm using it just to make the point,

我想通过这张图片阐述一些
which you already know about;

你们已经知道的知识
that the nervous system is complex

即神经系统是一个
in it performs a complex set of functions.

功能复杂的复合体
It's able to do that because there are cells like this particular cell

之所以这样是因为它的细胞像这个
that have shapes that are suited to their function.

染色细胞一样具有与功能相适应的外形