As the oil, coal and other renewable energies report an emergency frequently, renewable energy research and development has become the focus of the whole world.
随着石油、煤炭等常规能源的日益枯竭，可再生能源的开发与利用成为了全世界的焦点。
As the oil, coal and other renewable energies report an emergency frequently, renewable energy research and development has become the focus of the whole world.
随着石油、煤炭等常规能源的日益枯竭，可再生能源的开发与利用成为了全世界的焦点。
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