在 Microsoft Office 中减小图片的文件大小 - Microsoft 支持
压缩单个图片. 如果不需要映像中的每个 像素 即可获取其可接受的版本，则可以压缩图片以减小文件大小。 文件在 Microsoft Office 应用程序中打开后，选择要压缩的图片。
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Project Online Desktop Client, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Project Professional 2021, Project Standard 2021, Excel 2021 for Mac, Word 2021 for Mac, PowerPoint 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Project Professional 2019, Project Standard 2019, Excel 2019 for Mac, Word 2019 for Mac, PowerPoint 2019 for Mac, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Project Professional 2016, Project Standard 2016
使用 Windows 激活疑难解答 - Microsoft 支持
激活有助于验证你的 Windows 副本是否为正版，且未在超过 Microsoft 软件许可条款所允许数量的设备上使用。 如果无法激活激活Windows 11，激活疑难解答可以提供帮助。
修复 Office 应用程序 - Microsoft 支持
如果Microsoft 365 应用程序（如 Word 或 Excel）无法正常工作，有时重启会解决问题。 如果这不起作用，你可以尝试修复它。
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, InfoPath 2013, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
在 Outlook 中打开和使用共享邮箱 - Microsoft 支持
了解如何在 Outlook 中打开共享邮箱。 共享邮箱允许一组用户通过公用邮箱查看和发送电子邮件、共享日历，并打开联系人列表。
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Office for business, Office 365 Small Business, Microsoft 365 admin, Outlook on the web, New Outlook for Windows
Use live captions in Microsoft Teams meetings
Learn how to enable live captions in Teams meetings and see real-time subtitles for what's said. Improve your accessibility and comprehension.
Applies To:
Microsoft Teams
关于 Microsoft Authenticator - Microsoft 支持
Microsoft Authenticator 是一款免费应用，可帮助你在不使用密码的情况下登录到所有帐户 - 只需使用指纹、人脸识别或 PIN 即可。
Applies To:
Microsoft account dashboard
在 Outlook for Windows 中显示、隐藏和查看密件抄送 (密件抄送) 字段 - Microsoft 支持
如何在 Outlook 中使用 bcc (密件抄送) 发送邮件的私密副本给指定的收件人。
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, New Outlook for Windows
切换到新的 Microsoft Teams - Microsoft 支持
切换到新 Teams，体验迄今为止最快的 Teams 版本，从头开始重新生成。 新 Teams 采用性能优先的思维模式，比以往更快、更简单、更灵活。
Applies To:
Microsoft Teams
Sum data by using a query - Microsoft Support
Learn how to use an aggregate function in Access to sum the data in a query result set.
Applies To:
Access for Microsoft 365, Access 2021, Access 2019, Access 2016
Surface 恢复映像下载 - Microsoft 支持
注意: 如果你是管理组织中的 Surface for Business 设备的 IT 管理员，请参阅恢复工具 (Surface IT 工具包) 了解将受支持的 Surface 设备还原到其出厂状态的另一种方法。