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.
世界杯盘囗k8凯发推荐集团（网址:QY81.COM）世界杯盘囗k8凯发推荐集团_世界杯盘囗k8凯发推荐集团_世界杯盘囗k8凯发推荐集团_世界杯盘囗k8凯发推荐集团_世界杯盘囗k8凯发推荐集团世界杯盘囗k8凯发推荐集团_世界杯盘囗k8凯发推荐集团_世界杯盘囗k8凯发推荐集团_CnbRnRCen
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
