Check out this interesting - and motivating -fact: According to San Francisco-based Flex Your Power (California's statewide energy-efficiency marketing and outreach campaign), an office building with average operating efficiency and 50,000 square feet of space can reduce its operating costs by approximately $40,000 per year via no- and low-cost methods. (No need to go back and re-read that last sentence; you read it correctly.)
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机译：看看这个有趣的，有启发性的事实：根据位于旧金山的Flex Your Power（加利福尼亚州全州的节能营销和推广活动），具有平均运营效率和50,000平方英尺空间的办公楼可以通过以下方式降低运营成本：通过无成本和低成本的方法，每年大约40,000美元。 （无需返回并重新阅读最后一句话；您已正确阅读。）
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