官网提供的安装typora的方式 Typora官网：（ https://typora.io/ ）提供 # or run: # sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys BA300B7755AFCFAE wget -qO - https://typora.io/linux/public-key.asc | sudo apt-key add - # add Typora's repository sudo add-ap