And these verbal descriptions lead to some pictures that I put up and I'll put up again about how you might try to accomplish something like run an engine or move heat from a colder to a warmer body.

这些言语的描述有助于你们理解我讲过的,而且还要再讲的一些物理图像,比如一台发动机,是怎么运行的,或热怎样从冷的物体传到热的物体。

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It could be the letter understood either graphically or audibly, and the variety of ways in which one can choose a basic unit in the study of linguistics means that you need a special word for that unit, which is characteristically "the tagmeme."

它既可以以图像的方式理解，也可以以声音的方式，因为每个人研究时选取的,基本的语言学单位不一样,所以需要一个特殊的名词来指代这个单位，这就是，法位“

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I don't know how well you can see it in this figure here, is the slope of a straight line connecting these two points, and as the points come closer and closer, the straight line would become tangent to the curve.

我不清楚你们对于这个图像的理解,这条连接两点的斜线,随着两点距离逐渐缩小,两点连线会变成曲线的切线

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