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To make this site work properly, we sometimes place small data files called cookies on your device. Most big websites do this too.
A cookie is a small text file that a website saves on your computer or mobile device when you visit the site. It enables the website to remember your actions and preferences (such as login, language, font size and other display preferences) over a period of time, so you don’t have to keep re-entering them whenever you come back to the site or browse from one page to another.
A number of our pages use cookies to remember:
Also, some videos embedded in our pages use a cookie to anonymously gather statistics on how you got there and what videos you visited.
Enabling these cookies is not strictly necessary for the website to work but it will provide you with a better browsing experience. You can delete or block these cookies, but if you do that some features of this site may not work as intended.
The cookie-related information is not used to identify you personally and the pattern data is fully under our control. These cookies are not used for any purpose other than those described here.
You can control and/or delete cookies as you wish – for details, see aboutcookies.org. You can delete all cookies that are already on your computer and you can set most browsers to prevent them from being placed. If you do this, however, you may have to manually adjust some preferences every time you visit a site and some services and functionalities may not work.
为了使本网站正常运行，我们有时会在您的设备上放置称为 cookie 的小数据文件。大多数大型网站也这样做。
Cookie 是网站在您访问网站时保存在您的计算机或移动设备上的小文本文件。它使网站能够记住您在一段时间内的操作和偏好（例如登录、语言、字体大小和其他显示偏好），因此您不必在每次返回网站或从一个页面浏览到另一页面。
我们的许多页面都使用 cookie 来记住：
此外，我们页面中嵌入的一些视频使用 cookie 来匿名收集有关您如何到达那里以及您访问了哪些视频的统计信息。
启用这些 cookie 并不是网站正常运行所必需的，但它将为您提供更好的浏览体验。您可以删除或阻止这些 cookie，但如果您这样做，本网站的某些功能可能无法按预期运行。
与 cookie 相关的信息不会用于识别您的个人身份，并且模式数据完全由我们控制。这些 cookie 不会用于此处描述之外的任何目的。
您可以根据需要控制和/或删除 cookie – 有关详细信息，请参阅aboutcookies.org。您可以删除计算机上已有的所有 cookie，并且可以设置大多数浏览器以防止放置它们。但是，如果您这样做，您可能需要在每次访问站点时手动调整一些首选项，并且某些服务和功能可能无法运行。