这个国家已经成为世界上最大的能源消耗国，并计划到2020年使核电发电量增加7倍。
The country, already the world's biggest energy consumer, plans to expand nuclear capacity by seven-fold by 2020.
国际能源署预计从现在到2030年，核电发电量将增长20%，但同期核电占发电总量的比重将从14%降至11%。
The association estimates that generation of nuclear power would rise by 20% between now and 2030, but the share of nuclear in electricity generation would fall from 14% to 11% during the same period.
的确，日本相当一部分发电量(约30%)来自于核电。
It's true that a significant portion of Japan's electricity output — about 30% — comes from nuclear.
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