房屋能效措施可极大的节约成本。
Energy efficiency measures in buildings offer significant cost savings.
报告指出：“ 在近期，提高能效是减排最大且成本最低的渠道。”
“In the near term, energy efficiency is the largest and lowest cost source of emission reductions,” the report says.
成本节约仍是业务外包的首要目的，不过，供应商们的执行效绩也成为各自竞争力的主要表现。
Cost savings are still the principal motivation to outsource, but performance is becoming the main battleground between providers.
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