No se pueden agregar scripts, ya que, no esta la pestaña de scripts options.

A fantastic tool for enlarging vocabulary size.
There are some minor bugs though: 1) Even when the hotkey is not pressed, the small window still pops up. 2) Sometimes, the pronunciation is not successfully fetched, but no error message is shown.

不管选项里有没有设置取词热键，选中单词总是会弹出翻译框，这个行为很烦人，希望能改改。

请问划过的生词怎么在anki里看见

It does exactly what it says, the only issue so far is the lacking dictionary support for more languages and maybe ability to disable on specific websites.