The addon "Install Translator" with Pass: 123 from http://translatorforfirefox.blogspot.com/ is a password stealer PWS:Win32/Stealer.H!bit and creates the following folder and file.
file: C:\Users\MyPc\AppData\Roaming\amd64_microsoft-windows-videodiagnostic\puiapi.exe
This .exe is dangerous and records user passwords.
Microsoft Defender Report:
password stealer PWS:Win32/Stealer.H!bit

Great

Simply doesn't work

不能页内翻译，需要提交url到google服务器去翻译，无法获取cookie等内容，需要登录的网页无法进行翻译

Sometimes it works but not always. Must be a bug somewhere.

When I attempted to use Google Translator for Firefox by nobzol, nothing at all happened. There were no instructions or hints at all on how to use it.