与大多数操作系统(operating system)一样，macOS 支持多种显示语言(display language)供您选择。虽然系统会在初始系统启动(system start)时提示您选择默认系统语言(default system language)，但您可以随时更改此设置，并让系统以您选择的语言显示菜单(system display menus)、应用程序窗口和其他系统功能。在本指南中，我们将向您展示如何在Mac(Mac)上更改为新的显示语言(display language)，以充分享受您首选语言的操作系统：(operating system)
注意：(NOTE:)对于本教程，我们将显示语言(display language)从英语(English)更改为西班牙语。更改为您想要的任何语言的步骤相同，包括中文、德语、阿拉伯语或印度语(Arabic or Hindu)。
步骤 1. 打开系统偏好设置
打开System Preferences(System Preferences)的方法不止一种，但最简单的（也是我注意到的最流行的）是从屏幕左上角(left corner)的Apple菜单访问它。(Apple menu)单击(Click)Apple 标志(Apple logo)，然后单击系统偏好设置(System Preferences)。
步骤 2. 转到语言和地区
在“系统偏好设置”(System Preferences)窗口中，单击“语言和区域”(Language & Region)选项。
步骤 3(Step 3)。添加您要使用的新语言
在语言和地区(Language & Region)窗口中，单击首选语言列表下的(Preferred languages)+ (Add)按钮开始添加新语言。
第 4 步(Step 4)。查找(Find)并添加您的首选语言
单击+ (Add)按钮会提示打开一个弹出窗口，其中显示您可以选择的所有可用语言。从列表中选择您想要的语言，然后单击右下角的添加(Add)按钮。这会将您选择的语言添加到首选语言(Preferred languages)列表中。在我们的例子中，我们选择了Español - Spanish。
根据您的语言，您可能需要在特定于不同地区和国家的多种变体中进行选择。在我们的例子中，向下滚动时另一个可行的选项是Español (Latinoamérica) - Spanish (Latin America)。
但是，当您进一步向下滚动时，您会注意到列表被水平分隔线分隔(separator line)。只有行上的语言是 macOS 完全支持的系统语言（显示在所有菜单、消息、应用程序、网页等中）。macOS 不完全支持该行下方的语言，选择它们时会显示警告。(Languages)在我们的案例中，我们在该行下方找到了几个西班牙语选项：
提示：(TIP:)您可以同时选择和添加多种语言，方法是按住Command (⌘)键，然后单击要添加的语言的名称。
步骤 5(Step 5)。确认您对主要语言的选择
添加您选择的语言后，弹出窗口会提示您选择Mac的主要语言，方法是在您之前的主要语言和您添加的新语言之间进行选择。与您最近添加的语言对应的按钮显示为蓝色。在我们的例子中，我们单击使用西班牙语(Use Spanish)按钮开始使用西班牙语作为主要显示语言(display language)。
当前的主要语言始终显示在首选语言(Preferred languages)列表的顶部。
在我们的例子中，一旦我们决定使用西班牙语(Use Spanish)，我们就会发现它是列表顶部的主要语言。即使您选择继续使用已启用的主要语言而不是刚刚添加的主要语言，新语言也会添加到首选语言列表中。此外，一旦在首选语言(Preferred languages)列表中添加了两种或多种语言，您可以更改它们的顺序并根据您的偏好通过在列表中上下拖动其中一种作为主要语言。如果不支持主要语言（macOS and/or apps），则使用列表中的第二种语言，依此类推。
步骤 6(Step 6)。选择所选语言的键盘输入(keyboard input)源（如果需要）
在MacOS Mojave和更高版本上，在将新语言作为主要语言添加到列表后，弹出窗口会立即提示您“选择要添加的输入源” 。(Select input sources to add")这允许您在Mac上打字时使用特定于该语言的特殊字符。由于此步骤不会影响您更改主要系统语言(system language)的进度，因此您可以选择适当的语言布局(language layout)或单击Not Now按钮稍后再决定。
提示：(TIP:)如果您对更改Mac使用的键盘输入语言(keyboard input language)感兴趣，您应该阅读：如何更改Mac上的键盘输入语言(keyboard input language)。
第 7 步。重新启动您的 Mac
将所需语言设置为主要语言后，单击左上角的(left corner)x按钮关闭“语言和区域”(Language & Region)窗口，然后您可以选择重新启动。选择立即重新启动，更改应在重新启动(Restart Now)Mac后立即生效。
你(Did)找到你要找的语言了吗？
如果您和我们在一起并阅读了整个教程，谢谢！我们认为它很有帮助，您现在正在以最让您开心的语言享受您的Mac 。🙂 在您的网络浏览器(web browser)中关闭此选项卡之前，请告诉我们您的语言是否完全支持Mac OS。我们也对你们中的一些人可能会选择作为默认语言的最奇特的语言感到好奇。如果您的语言不是大多数人使用的语言，我们会很高兴了解它。🙂
Change the display language on your Mac from English to another language
Like most operatіng systems, macOS supports multiple diѕplay languages yoυ can choose from. While yoυ are prompted to choose a default system language on the initial system start, yoυ can change this at any time and have thе system display menus, app windows, and other system features in the language of your choice. In thiѕ guide, we show you how to change to a new display language on yоur Mac, in order to fυlly enjоy the operating system in your preferred language:
NOTE: For this tutorial, we changed the display language from English to Spanish. The steps are the same for changing to any language you want, including Chinese, German, Arabic or Hindu.
Step 1. Open System Preferences
There is more than one way to open System Preferences, but the simplest (and the most popular from what I've noticed) is to access it from the Apple menu on the top left corner of your screen. Click the Apple logo, and then System Preferences.
Step 2. Go to Language & Region
In the System Preferences window, click the Language & Region option.
Step 3. Add the new language that you want to use
In the Language & Region window, click the + (Add) button under the Preferred languages list to start adding a new language.
Step 4. Find and add your preferred language
Clicking on the + (Add) button prompts a pop-up window to open, displaying all the available languages you can choose from. Pick your desired language from the list, then click the Add button in the lower right corner. This adds the language that you selected to the Preferred languages list. In our case, we selected Español - Spanish.
Depending on your language, you might need to choose between multiple variations that are specific to different regions and countries. In our case, another viable option as you scroll down is Español (Latinoamérica) - Spanish (Latin America).
However, as you scroll further down, you notice that the list is divided by a horizontal separator line. Only languages above the line are system languages fully supported by macOS (shown in all menus, messages, apps, web pages, etc). Languages below the line are not fully supported by macOS, and a warning is displayed when they are selected. In our case, we found several options for Spanish below the line:
TIP: You can select and add multiple languages at the same time, by holding down the Command (⌘) key, and clicking on the name of the languages that you want to add.
Step 5. Confirm your choice for the primary language
After adding your language of choice, a pop-up prompts you to select a primary language for your Mac, by choosing between your previous primary language and the new one you added. The button corresponding to your recently added language is colored in blue. In our case, we clicked the Use Spanish button to start using Spanish as the primary display language.
The current primary language is always displayed at the top of the Preferred languages list.
In our case, once we decided to Use Spanish, we could find it as the primary language at the top of the list. Even if you choose to continue using the already enabled primary language instead of the one just added, the new language is added to the preferred languages list. Also, once two or more languages are added in the Preferred languages list, you can change their order and choose one of them as primary by dragging it up and down the list, according to your preferences. If the primary language is not supported (by macOS and/or apps), the second language from the list is used and so on.
Step 6. Select the keyboard input sources for the selected language (if you want)
On MacOS Mojave and newer, a pop-up window prompts you to "Select input sources to add" immediately after a new language is added to the list as primary. This allows you to use special characters specific to that language when typing on your Mac. Since this step does not influence your progress in changing the primary system language, you can choose the appropriate language layout or click the Not Now button to decide later.
TIP: If you are interested in changing the keyboard input language used by your Mac, you should read: How to change the keyboard input language on your Mac.
Step 7. Restart your Mac
Once your desired language is set as primary, close the Language & Region window by clicking the x button in the upper left corner and you are offered the option to restart. Choose Restart Now, and the changes should take effect immediately after restarting your Mac.
Did you find the language you were looking for?
If you stayed with us and read the entire tutorial, thank you! We like to think that it was helpful and you are now enjoying your Mac in the language that makes you happiest. 🙂 Before closing this tab in your web browser, tell us if your language is fully supported on Mac OS. We are also curious about the most exotic language some of you might choose as the default. If your language is not what most people use, we would be thrilled to learn about it. 🙂
