正交正投影就是如此简单。

Orthographic projection is an simple as that.

youdao

如果想像物体是在玻璃盒子里，那么你会很容易地理解正交正投影的原理。

It is easy to see how orthographic projection works if you imagine that the object is inside a glass box.

youdao

接下来，如果你将顶视图和右侧视图向前翻折的话，你就会得到一个能够显示该物体三视图的正交正投影。

Next, if you could fold the top and right-side views forward, you would have an orthographic projection showing three views of the object.

youdao