On These Two Points 就这两点
Just these two points alone already make many people dislike it.
只是这两点就已经使得很多人不喜欢它了。
(These two points are connected, plus they are both connected to the original point).
(四个点中的两个点相连,加上它们又都与最初的一个点相连)。
(These two points are not connected, plus they are both not connected to the original point).
(四个点中的两个点不相连,加上它们又都不与最初的一个点相连)。
Now there many ways I can connect these two points together. The simplest way is to draw a straight line. It's called the linear interpolation. My line is not so straight, right here. You could do a different kind of line.
最简单的办法是,像这样画一条直线,这叫线性插值,不过我的这条线画得不太直,你也可以用别的办法,比如一条抛物线。
So let's reflect these two points.
那我们就把这两个点对称过去
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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