As an expert in digital navigation and user interface design, I'm here to help you with your query regarding keyboard shortcuts for navigating back in various applications and web browsers. It's important to note that keyboard shortcuts can vary depending on the operating system and the specific software you're using. However, I'll provide a general overview and then address the specific issue you've mentioned regarding Firefox.
在数字导航和用户界面设计方面，我是一位专家，我在这里帮助你解决有关在各种应用程序和网络浏览器中导航回退的键盘快捷键的问题。需要注意的是，键盘快捷键可能会根据操作系统和您正在使用的特定软件而有所不同。然而，我将提供一个概述，然后解决你提到的有关Firefox的具体问题。
The most common keyboard shortcut for going back is the Backspace key. However, in web browsers, pressing the Backspace key can sometimes delete the content at the cursor's position instead of navigating back. This is why some browsers have adopted different shortcuts for this purpose.
最常见的回退键盘快捷键是退格键。然而，在网络浏览器中，按下退格键有时会删除光标位置的内容，而不是进行回退导航。这就是为什么一些浏览器为此目的采用了不同的快捷键。
For instance, in Internet Explorer and some versions of Firefox, the shortcut is Alt + Left Arrow. In Google Chrome, the shortcut is Ctrl + Left Arrow or Alt + Left Arrow depending on the operating system and the browser's version.
Safari on macOS uses Cmd + [ (that's the left bracket key) for going back.
例如，在Internet Explorer和一些版本的Firefox中，快捷键是Alt + 左箭头。在Google Chrome中，快捷键是Ctrl + 左箭头或Alt + 左箭头，这取决于操作系统和浏览器的版本。macOS上的Safari使用Cmd + [（左括号键）来实现回退。
Now, let's address the issue with Firefox that you've mentioned. The confusion might arise from the fact that different versions of Firefox or different operating systems might have different default shortcuts. As of my last update, the standard shortcut to go back in Firefox is indeed Ctrl + Left Arrow on Windows and Cmd + Left Arrow on macOS. However, if these are not working for you, it's possible that your Firefox settings or an extension might be overriding the default behavior.
现在，让我们来解决你提到的Firefox问题。混乱可能源于不同版本的Firefox或不同的操作系统可能有不同的默认快捷键。截至我上次更新，Firefox中回退的标准快捷键确实是在Windows上是Ctrl + 左箭头，在macOS上是Cmd + 左箭头。然而，如果这些对你不起作用，那么可能是你的Firefox设置或某个扩展正在覆盖默认行为。
To resolve this, you can:
1. Check your Firefox settings to ensure that the default shortcuts are enabled.
2. Look for any installed extensions that might interfere with keyboard shortcuts and disable or configure them accordingly.
3. Reset Firefox to its default settings as a last resort, which will remove all extensions and customizations but might resolve the issue.
为了解决这个问题，你可以：
1. 检查你的Firefox设置，确保默认的快捷键是启用的。
2. 查找可能干扰键盘快捷键的任何已安装扩展，并相应地禁用或配置它们。
3. 作为最后的手段，将Firefox重置为其默认设置，这将移除所有扩展和自定义设置，但可能会解决问题。
It's also worth noting that some keyboard shortcuts can be customized by the user. If you're comfortable with advanced settings, you can explore the possibility of setting a custom shortcut that works best for you.
同样值得注意的是，一些键盘快捷键可以由用户自定义。如果你对高级设置很熟悉，你可以探索设置一个最适合你的自定义快捷键的可能性。
In conclusion, while the standard keyboard shortcut for going back is typically Backspace for most applications and Ctrl + Left Arrow or Cmd + Left Arrow for web browsers, it's essential to verify the specific shortcut for the software and operating system you're using. If the standard shortcuts aren't working, troubleshooting steps like checking settings, managing extensions, and resetting to defaults can help.
总之，虽然大多数应用程序的标准回退键盘快捷键通常是Backspace，网络浏览器的标准快捷键是Ctrl + 左箭头或Cmd + 左箭头，但验证你正在使用的软件和操作系统的具体快捷键是至关重要的。如果标准快捷键不起作用，检查设置、管理扩展和重置为默认值等故障排除步骤可以帮助解决问题。

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Looking for a keyboard shortcut for Back. Neither Cntr + left Arrow or Cntr + backspace work. The Firefox help on this subject titled "N900 Keyboard Shortcuts" indicate that the either Cntr + Left Arrow or Cntr + Backspace equates to hitting the "Back" button ...Oct 25, 2010read more >>