We need to know that energy consumption represents the single largest controllable operating expense for a building, typically a third of variable expenses.
我们应当认识到，能源消耗是建筑物的唯一一项最大的但可控制的营运费用，一般为可变费用的三分之一。
According to statistics, travel expense has been the second biggest controllable cost, which is next to human resource, in enterprise operation.
据统计，差旅成本已成为企业运营中次于人力成本的第二大可控成本。
According to statistics, travel expense has been the second biggest controllable cost, which is next to human resource, in enterprise operation.
据统计，差旅成本已成为企业运营中次于人力成本的第二大可控成本。
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