Error
不止一套发行版被指定 show_static(trusty trusty-updates trusty-backports xenial xenial-updates xenial-backports artful artful-updates artful-backports bionic)
不止一套发行版被指定 show_static(trusty trusty-updates trusty-backports xenial xenial-updates xenial-backports artful artful-updates artful-backports bionic)