第一个问题 就是我在VM15 转个v20系统，但是始终apt-get update 都是失败的，下面这是我安装mysql 的报错 

sroot@liu:/home/liu/Desktop# sudo apt-get update

错误:1 https://community-packages.deepin.com/deepin apricot InRelease
暂时不能解析域名“community-packages.deepin.com”
错误:2 https://community-packages.deepin.com/printer eagle InRelease
正在设定 mysql-apt-config
暂时不能解析域名“community-packages.deepin.com”h a variety of MySQL components. You may select the appropriate product to choose the version that you wish to receive.
错误:3 https://community-store-packages.deepin.com/appstore eagle InRelease
暂时不能解析域名“community-store-packages.deepin.com”elect last option 'Ok' to save the configuration, then run 'apt-get update' to load package list. Advanced users can always change the configurations
错误:4 http://repo.mysql.com/apt/debian jessie InRelease
暂时不能解析域名“repo.mysql.com”
正在读取软件包列表... 完成you wish to configure?
W: 无法下载 https://community-packages.deepin.com/deepin/dists/apricot/InRelease 暂时不能解析域名“community-packages.deepin.com”
W: 无法下载 https://community-store-packages.deepin.com/appstore/dists/eagle/InRelease 暂时不能解析域名“community-store-packages.deepin.com”
W: 无法下载 http://repo.mysql.com/apt/debian/dists/jessie/InRelease 暂时不能解析域名“repo.mysql.com” (Currently selected: Enabled)
W: 无法下载 https://community-packages.deepin.com/printer/dists/eagle/InRelease 暂时不能解析域名“community-packages.deepin.com”d)
W: 部分索引文件下载失败。如果忽略它们，那将转而使用旧的索引文件。 

第二个问题就是什么时候支持腾讯会议呢  谢谢了哈