The melting "mirrors" the worldwide increase in temperature and is from the burning of coal, oil and gas.
融化“反映”了全球温度的上升,这是由煤炭、石油和天然气的消耗造成的。
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While fossil fuels—coal, oil, gas—still generate roughly 85 percent of the world's energy supply, it's clearer than ever that future belongs to renewable sources such as wind and solar.