由于您的内容正在从远程域加载到iframe，所以它被归类为第三方Cookie 。

Since your content is being loaded into an iframe from a remote domain, it is classed as a third-party cookie.

绝大多数第三方Cookie由广告客户提供（通常标记为跟踪Cookie 通过反恶意软件软件），许多人认为他们是侵犯隐私。因此，大多数浏览器都提供阻止第三方Cookie的功能，这可能是您遇到的问题的原因。

The vast majority of third-party cookies are provided by advertisers (these are usually marked as tracking cookies by anti-malware software) and many people consider them to be an invasion of privacy. Consequently, most browsers offer a facility to block third-party cookies, which is probably the cause of the issue you are encountering.