The job can either be to set up a replacement air system - for instance because of a command in connection with exhaust of noxious fumes - or to ensure a minimum temperature in the room.

• 这项工作一般就是建造一个空气转换系统---比如把一个处理机与毒气排放柜相连接，或者想办法保持室内一个最低的温度。