设置 - 设备 - 划到最低端 - 点击加号 + ：
任意名称，如： terminal
命令：gnome-terminal
shortcut：顺序按下你想要配置的组合键，例如： Ctrl + Alt + T - Add(添加)即可立即生效。
This is how to do it on a Gnome desktop:
open Settings (which I called preferences)
go to Devices -> Keyboard
scroll down and click on "+"
enter some random name e.g. "Terminal" and as command "gnome-terminal"
click on "Set Shortcut..." and choose your shortcut e.g. CTRL-ALT-T
click on "Add"