Whenever you connect to a website, a DNS (domain name system) first turns the domain name (e.g. www.mozilla.org) into an IP address that allows your internet traffic to reach that destination. Typically, your ISP (internet service provider) provides you with a DNS server that your devices use automatically.
当您打开网站时，DNS（域名系统）会将域名（例如 www.mozilla.org）转换为 IP 地址，使您的互联网流量能够传送到指定目的地。通常情况下，您的设备会自动使用由您的 ISP（互联网服务提供商）提供的 DNS 服务器。