Cleaner energy sources must be put to use quickly and broadly,both in the energy-guzzling industrial world and in developing nations,which cannot be expected to cut back on their energy use.

• 在大量消耗能源的工业国家和发展中国家都不可能会降低能源的使用，因此要快速而广泛地将洁净能源原料投人使用。