If you've ever used omni-IM service Digsby, you know that its greatest feature is the ability to log in to all your IM accounts from any computer with Digsby installed.
如果你用过全能的即时通讯服务Digsby，你就知道它的伟大之处在于，你可以在任何安装Digsby的电脑上登录你所有的IM账户。
All these are very useful for spatial reasoning in computer vision and image im formation system.
这些方法对计算机视觉和图像信息系统中的空间推理都是十分有用的。
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