Magic World

Plane flies on the rays of the sun

作者：21ST

瑞士太阳能飞机开启环球之旅。

HOW do planes fly? Most planes fly by oil. But Solar Impulse 2 (阳光动力2号) is different. Without a drop of oil, it is powered only by sunlight. Early this March, this plane will begin its five-month world trip.

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