大面积的维修门，简明的操作面板，操作简单，维护方便。
Large maintenance door, concise control panel, easy operating, easy maintenance.
执行定期保养及维修门关闭系统，包括但不限于钥匙卡系统和电磁系统。
Perform periodic maintenance and repair on door closure systems, including but not limited to key card systems and electromagnetic systems.
突然，通道未端的门打开了，一个维修工人进来，离Michael只有几步之遥。
Suddenly, the door at the end of the hallway opens, a maintenance man enters only feet away from Michael.
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