求翻译：3. Visit only those "trusted" sites, usually sites running by major corporations (e.g. HP, IBM, Compaq, Microsoft, Network Associates/McAfee, etc) are usually considered "trusted", do not visit any sites you are in doubt. There are reports that some sites can distribute virus to your machine simply by open them. Extra care is highly recommended when visiting web sites running by unknown organisations, if you encounter any starnge sites and you are in doubt, close your Internet Explorer, shutdown and restart your machine again, and report the web site address such that we can verify that.是什么意思？

待解决 悬赏分：1 - 离问题结束还有