There are two surfaces in one figure, I wanted  to use the legend option to  distinguish the two surfaces, but this option can not be used.

Its very useful,thanks!!!

To the world you may be one person,but to one person you may be the world!

 I realized that using my native language will tire the peaple who's native language is English.So I will use English in mapleprimes from now on.:)

To the world you may be one person,but to one person you may be the world!

 To:xianyang zeng.If the teacher that using Maple V was Dr. Wang Ziliang? If so, you are my teacher:)您有可能真是我的大学班主任曾现洋老师了，曾老师好啊，我是96级的张家雷：）呵呵，这个世界真的是这么小么？

To the world you may be one person,but to one person you may be the world!

 Thats great！Thanks！

To the world you may be one person,but to one person you may be the world!

 It can be seen that we can use both Chinse and English here!Now try pressing a math equation：Jacobi equation

To the world you may be one person,but to one person you may be the world!

@junlin What you said is right,Thanks!

@junlin 说的也是，看来得好好学学英语了。

To one person you may be the world!

I am a mathematics teacher in Yanshan University of China. I could not understand all you said in this blog,but I can see you are one person that has no prejudice to China.Welcome to China and wish you and  your Maple be success!  

to one person you may be the world!