https://blog.wongcw.com/2019/10/02/mozilla%e5%b0%87%e7%82%bafirefox%e7%a7%81%e5%af%86%e7%80%8f%e8%a6%bd%e6%a8%a1%e5%bc%8f%e6%8f%90%e4%be%9b%e5%96%ae%e7%8d%a8%e7%9a%84%e6%90%9c%e7%b4%a2%e5%bc%95%e6%93%8e/
Mozilla將為Firefox私密瀏覽模式提供單獨的搜索引擎