剪裁视频. 在“普通”视图中，选择幻灯片上的视频边框。 选择视频后，工具栏功能区上会显示“ 视频工具” 部分，并且有两个选项卡： “格式” 和“ 播放：

You're using add-ins with Outlook, Excel, or other Office apps. While 32-bit applications can work with add-ins, they can use up a system's available virtual address space. With 64-bit apps, you have up to 128 TB of virtual address space which the app and any add-ins running the same process can share. With 32-bit apps, you might get as little ...

可以在文档中添加超链接，使读者能够即时访问同一文档的其他部分。 若要创建书签，必须先在目标位置创建“书签”。

Under Ways to sign in , you have three choices to sign in with Windows Hello:. Select Facial recognition (Windows Hello) to set up facial recognition sign-in with your PC's infrared camera or an external infrared camera

Here are some solutions to common problems with the new Microsoft Edge . If Microsoft Edge keeps crashing. If you can't open Microsoft Edge, or if it opens briefly and then closes, or if you’re unable to open specific webpages, here are some things you can try.

In Outlook, you have the option to: Attach a file | Upload a locally saved file to your OneDrive | Insert a picture into the body of a message | Attach an email item | Solve problems with attachments. Attach a file to an email message in new Outlook. New Outlook keeps track of the files you have worked on recently and suggests them whenever you decide you want to attach a file to an email message.

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显示选项卡后，除非清除“检查”框或必须重新安装 Microsoft 365 程序，否则“开发工具”选项卡将保持可见。 “ 开发工具 ”选项卡是你想要执行或使用以下项时转到的位置： 编写宏。

Find PowerPoint help and training from Microsoft. Get answers to your questions, and learn from how-to articles and training videos for PowerPoint.

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