steam:i386:
  Installed: 1:1.0.0.45-1ubuntu1
  Candidate: 1:1.0.0.45-1ubuntu1
  Version table:
 *** 1:1.0.0.45-1ubuntu1 0
        500 http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty/multiverse i386 Packages
        100 /var/lib/dpkg/status