Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
欢乐三张（网址:EDF6.COM）欢乐三张_欢乐三张_欢乐三张_欢乐三张_欢乐三张欢乐三张_欢乐三张_欢乐三张_r0rQV4t1k
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
