即使不是发布日，从主 Ubuntu 存档下载也很慢，我如何让 apt-get 自动使用离我很近的镜像？
Get:1 http://dl.google.com stable Release.gpg [197B]
Hit http://archive.canonical.com maverick Release.gpg
Ign http://archive.canonical.com/ubuntu/ maverick/partner Translation-en_IN
Hit http://security.ubuntu.com maverick-security Release.gpg
Ign http://security.ubuntu.com/ubuntu/ maverick-security/main Translation-en_IN
Ign http://security.ubuntu.com/ubuntu/ maverick-security/restricted Translation-en_IN
Hit http://archive.canonical.com maverick Release
Ign http://security.ubuntu.com/ubuntu/ maverick-security/universe Translation-en_IN
Ign http://security.ubuntu.com/ubuntu/ maverick-security/multiverse Translation-en_IN
Hit http://security.ubuntu.com maverick-security Release
Hit http://archive.canonical.com maverick/partner Packages
Hit http://security.ubuntu.com maverick-security/main Packages
Hit http://security.ubuntu.com maverick-security/restricted Packages
Hit http://security.ubuntu.com maverick-security/main Sources
Hit http://security.ubuntu.com maverick-security/restricted Sources
Hit http://security.ubuntu.com maverick-security/universe Packages
Hit http://security.ubuntu.com maverick-security/universe Sources
Ign http://dl.google.com/linux/chrome/deb/ stable/main Translation-en_IN
Hit http://security.ubuntu.com maverick-security/multiverse Packages
Hit http://security.ubuntu.com maverick-security/multiverse …