How long will it take for changes in my robots.txt file to affect my search results?
我对 robots.txt 文件的更改要过多久才会体现在我的搜索结果中？
First, the cache of the robots.txt file must be refreshed (we generally cache the
contents for up to one day). You can speed up this process by
submitting your updated robots.txt to Google.
Even after finding the change, crawling and indexing is a complicated process that can
sometimes take quite some time for individual URLs, so it's impossible to give an
exact timeline. Also, keep in mind that even if your robots.txt file is disallowing
access to a URL, that URL may remain visible in search results despite that fact that
we can't crawl it. If you wish to expedite removal of the pages you've blocked from
Google,
submit a removal request.
首先，robots.txt 文件的缓存必须更新（我们一般最多将内容缓存一天）。您可以通过向 Google 提交更新后的 robots.txt 加快此过程。
即使在系统发现了更改后，抓取与索引编制过程也很复杂，有时对于个别网址的处理可能需要很久，因此无法给出准确的时间。另请注意，即使 robots.txt 文件禁止访问某个网址，该网址仍有可能显示在搜索结果中，只是我们无法抓取它。如果您想加速移除禁止 Google 访问的网页，请提交移除请求。