这是因为没有安装官方的插件,需要搜索官方认证的插件才可以安装。
1、点击火狐浏览器右上角的设置图标。
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https://iknow-pic.cdn.bcebos.com/f11f3a292df5e0fe0c9b49d7526034a85fdf7261"/>
2、在弹出的菜单上点击附加组建选项。
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https://iknow-pic.cdn.bcebos.com/d058ccbf6c81800ab10a49d8bf3533fa838b477d"/>
3、在搜索框中输入安全,点击右边的放大镜进行搜索。
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https://iknow-pic.cdn.bcebos.com/728da9773912b31bb6fe0dff8818367adbb4e152"/>
4、在搜索出来的结果中点击其中一个,进入安装界面。
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https://iknow-pic.cdn.bcebos.com/dcc451da81cb39db6114a780de160924aa183014"/>
5、点击界面左边的添加到Firefox按钮。
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https://iknow-pic.cdn.bcebos.com/64380cd7912397ddc99058d25782b2b7d1a2877f"/>
6、在弹出的窗口上点击添加按钮。
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https://iknow-pic.cdn.bcebos.com/faedab64034f78f004e25a2577310a55b2191c7f"/>
7、安装完成后可以看到插件已经在已安装列表。
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https://iknow-pic.cdn.bcebos.com/eaf81a4c510fd9f99cff95bf2b2dd42a2934a478"/>