a part of a computer system that prevents people from reaching information without permission, but still allows them to receive information that is sent to them 防火墙，网盾（防止窃取计算机信息的系统） Collocations Email and the internet Email and the internet电子邮件和互联网 Email电子邮件 receive/get/open an email收到／打开电邮 write/send/answer/forward/delete an email写／发送／回复／转发／删除电邮 check/read/access your email查收／阅读／读取电邮 block/filter (out) junk/spam/unsolicited email阻止／过滤垃圾／不请自来的电邮 exchange email addresses交换电邮地址 open/check your inbox打开／查看收件箱 junk mail fills/floods/clogs your inbox垃圾电邮塞满收件箱 have/set up an email account拥有／创建电邮账号 open/send/contain an attachment打开／发送／包含附件 sign up for/receive email alerts注册使用／收到电邮提醒 Connecting to the internet连接到互联网 use/access/log onto the internet/the Web使用／登录互联网 go online/on the internet上网 have a high-speed/broadband/wireless (internet) connectionaccess/connect to/locate the server登录／连接到／定位服务器 use/open/close/launch a/your web browser使用／打开／关闭／开启网页浏览器 browse/surf/search/scour the internet/the Web上网浏览／搜索 send/contain/spread/detect a(n) (computer/email) virus发送／含有／传播／发现（电脑／电邮）病毒 update your anti-virus software升级杀毒软件 install/use/configure a firewall安装／使用／设置防火墙 accept/enable/block/delete cookies接受／启用／阻止／删除网站饼干 Using the internet使用互联网 visit/check a website/an internet site/somebody’s blog访问／查看网站／互联网站点／某人的博客 create/design/launch a website/social networking site创建／设计／启用一个网站／社交网站 start/write/post/read a blog创建／写／发布／读博客 update your blog/a website更新博客／网站内容 be in/meet somebody in/go into/enter an internet chat room在／遇见某人在／进入网络聊天室 download/upload music/software/a song/a podcast/a file/a copy of something下载／上传音乐／软件／一首歌／一个播客／一个文件／一个…的备份 share information/data/files共享信息／数据／文件 post a comment/message on a(n) website/online message board/web forum/internet chat room在网站上／网络留言板上／网络论坛上／网络聊天室里发布评论／信息 stream video/audio/music/content over the internet在互联网上流播视频／音频／音乐／内容 join/participate in/visit/provide a(n) (web-based/web/online/internet/discussion) forum加入／访问／提供（网络）论坛 generate/increase/monitor internet traffic产生／增加／监管网络流量 Topics Computers c1