Acquire::http::Proxy "http://user:password@ip:port";
Acquire::https::Proxy "https://user:password @ip";
Acquire::ftp::Proxy "ftp:// user:password @ip";
如果用户名或密码中包含@,好像没有办法转义,只能改用户名或密码
Acquire::http::Proxy "http://user:password@ip:port";
Acquire::https::Proxy "https://user:password @ip";
Acquire::ftp::Proxy "ftp:// user:password @ip";