From professional translators, enterprises, web pages and freely available translation repositories.
假如你用的是chrome浏览器，并且你在阅读一个中文的网页 你会在页面的上方看到这样一个很可爱的方框 浏览器会自动识别到这是中文网页 你只需要点一下鼠标 就可以看到英文翻译
if you're using google chrome and you go to a chinese language site, you notice this really cute box at the top, which automatically detects that the page is in chinese and very quickly at a mouse click will give you a translation of the page.