非常好用的扩展！！！但是升级到firefox65后，快捷键部分失效，无法使用Ctrl和Alt的组合键，请尽快修复，谢谢！
Google translation:
Very easy to use extension! ! ! However, after upgrading to firefox65, the shortcut key part is invalid, you can not use the combination of Ctrl and Alt, please fix it as soon as possible, thank you!