先进的电池正逐步退出专业化市场，逐渐进入主流市场，这标志着电动车和屋顶太阳能推进器等前瞻性技术迎来了一个转折点。
Advanced batteries are moving out of specialized markets and creeping into the mainstream, signaling a tipping point for forward-looking technologies such as electric cars and rooftop solar propels.
太阳能飞机依然是遥远的梦想，但IATA知道，推进科技界线必能协助清洁航空旅行。
A solar-powered airliner is still a distant dream, but IATA knows that pushing the boundaries of technology will be necessary to help clean up air travel.
伦敦(CNN)——现在路上的车辆可供的候选动力越来越多了——太阳能的，氢气推进的，还有像Tesla Motor的Roadster。
London (CNN) — There are now more alternative energy cars on the road that ever before — solar ones, hydrogen ones and fast electric ones like Tesla Motors' Roadster.
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