The solar-powered aircraft Solar Impulse 2 departs from the international airport in Cairo, capital of Egypt, July 23, 2016. The solar-powered aircraft Solar Impulse 2 left Cairo for Abu Dhabi on Saturday. (Xinhua)
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The solar-powered aircraft Solar Impulse 2 departs from the international airport in Cairo, capital of Egypt, July 23, 2016. The solar-powered aircraft Solar Impulse 2 left Cairo for Abu Dhabi on Saturday. (Xinhua)
