可以从即时消息窗口中的表达式选取器 (选择要使用的表情，方法是在聊天窗口中选择笑脸) 或使用键盘快捷方式（一组字符或括号中的特定单词）。 将光标悬停在选项板中的表情符上可以看到其键盘快捷方式。

Get expert help, 24/7. Have our partners at Excelchat fix your formulas for free. Need more help? Want more options? Discover Community. Explore subscription benefits, browse training courses, learn how to secure your device, and more. Microsoft 365 subscription benefits. Microsoft 365 training.

Skype for Business lets you quickly connect with others across your company or around the world. It looks and feels like Skype, but has added productivity features that help run your business efficiently, like seeing when someone is available, in a meeting, or presenting, providing industrial strength security for calls, or broadcasting a meeting online to a large audience.

消费者客户可以购买适用于 Windows 和 Mac 的 Microsoft Office 2021，商业客户现在可以购买适用于 Windows 和 Mac 的 Microsoft Office LTSC。 Office 2021 和 Office LTSC 2021 是 Office 的下一个永久版本。 其中包含对本地 Office 的 Microsoft Office 2019 及更早版本的改进。

Open XML 格式 (.docx/.xlsx/.pptx) 是所有受支持版本的 Microsoft Office 的默认格式，除非有使用其他格式的特定原因，否则我们建议对 Office 文件使用此格式。 若要详细了解 Open Document Format (ODF) 通常请参阅 Office 应用程序的 OASIS Open Document Format 。

Get expert advice, dedicated support, and personalized guidance from business specialists. With Business Assist, get help making Microsoft 365 products work for you and everyone in your business. Learn more. Ready to install? Before you begin, make sure your PC or Mac meets the system requirements.