公开一种远程摄像机定位和控制系统，其允许单个操作者使用和支承在手臂范围外的摄像机。
A remote camera positioning and control system is disclosed that permits a sole operator to use and support a camera out of arm's reach.
经过五次治疗后，我的手臂有了明显的改善，而且疼痛范围也是原来的一小部分。
After five treatments, there has been dramatic improvement in my arm, and the pain is a fraction of what it was.
如果一个交互式计算机屏幕要在实用性上与白板相匹配，它必须在手臂长度范围和横跨房间范围内是可视的。
If an interactive computer screen is to match a whiteboard in usefulness, it must be viewable from arm's length as well as from across a room.
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