求翻译：在满足经济发展对能源需求的条件下可以减少煤电站的建设。到2020年至少可以少建50~60套百万等级的燃煤电站。尽可能减少煤在能源消费总量中的比重，这对PM2.5的控制起较大作用。是什么意思？

To meet the economic development of the energy demand conditions can reduce the construction of coal power stations. 2020, at the least to build the sets of 50 to 60 million-grade coal-fired power station. As far as possible to reduce the proportion of coal in total energy consumption in this a pm2.

To meet economic development needs of the energy can be reduced under the conditions of the coal power plant construction. In the year 2020 at least a few can be set 50 to 60 grade 1 million of coal power plants. As far as possible and reduce total energy consumption in the proportion of the PM 2.5

In satisfies the economical development to be possible to reduce the coal power plant to the energy demand condition under the construction.May little construct 50~60 sets of 1,000,000 ranks at least to 2020 the coal-burning power plants.As far as possible reduces the coal in energy expense total qu

Under the condition of economic development to meet the energy needs of construction of coal-fired power plants can be reduced. Until the year 2020 can be deprived of at least 50~60 million coal-fired power station. Minimize coal's share in total energy consumption, control of the PM2.5 played a lar

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