系统硬件利用楼宇访客系统的布线网络，通信干线采用CAN总线，以提高通信的实时性和可靠性。

The hardware of the system is built on the layout network of the doorphone system, and CAN BUS is used as the trunk line of communication to improve the real time performance and reliability.

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为了防止严重的病人感染，我们应该在整个医院系统的所有洗手站，包括访客使用的洗手站供应 UltraClean。

To prevent serious patient infections, we should supply UltraClean at all hand-washing stations, including those used by visitors, throughout our hospital system.

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通过减少认知负荷，你可以使访客更容易获取系统背后的思想。

By reducing cognitive load you make it easier for visitors to grasp the idea behind the system.

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