实践中，我国还可以从多方面提高公共商品供给效率。
In practice, China can also enhance the supply efficiency of public goods from various aspects.
二是在现有水资源供给条件下，提高用水效率、减少浪费，实现供求自然平衡。
Efficiency of water use should be raised and waste of water resources reduced to realize a natural balance.
到2020年我们能源供给中的20％将来自可再生能源，并且我们还将提高20％的能源利用效率。
By 2020, 20 per cent of our energy will be from renewables and we will have increased our energy efficiency by 20 per cent.
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