For details, please refer to
http://www.robotstxt.org/wc/norobots.html. Set the robots.txt file on the server to prevent GoogleBot or other web roamors from entering. Google's web roaming has a user agent "Googlebot".
Another approach is to add a META tag on the HTML page, which is more convenient for a single web page. For instructions, please visit http://www.robotstxt.org/wc/exclusion.html#meta. You can also see the contents of these tags in the HTML standard. Please note that these two methods cannot take effect immediately. It is necessary to wait until Google's next roaming.
