First, read the English article below.

Click or double-click the Firefox app icon, which resembles an orange fox wrapped around a blue globe. If you can't open Firefox due to issues for which you want to start Firefox in Safe Mode, skip ahead to the Windows or Mac method. It's in the top-right corner of the Firefox page. Doing so prompts a drop-down menu to appear. You'll find this option at the bottom of the drop-down menu. It's at the top of the "Help" section of the drop-down menu. Doing so will close Firefox. This will prompt Firefox to re-open in Safe Mode. If Firefox's issues disappear while in Safe Mode, one or more of the add-ons you've installed is causing the issues. Go to the add-ons page by clicking ☰, clicking Add-ons, and clicking the Extensions tab, then click Disable or Remove to the right of an add-on to either turn it off or delete it from Firefox. You can also reset your entire browser to its default settings by clicking Restart with Add-ons Disabled, clicking Refresh Firefox when prompted, and clicking Refresh Firefox when asked again. This will remove all of your browser's settings and add-ons. 

Now, please write a short abstract for it in Chinese. Abstract:
打开Firefox。 单击☰。 单击帮助。 单击以安全模式重新打开。 出现提示时单击重新打开。 出现提示时单击在安全模式下启动。 观察浏览器的性能。 必要时禁用附加组件。