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The aircraft will fly powered only by the rays of the sun.
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A plane that can fly on solar power has been fully developed.
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In "Some airlines, however, are wary of gearboxes" (l.15), "wary" is synonymous with cautious.
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The word "rowdy" (L.5) is synonymous with quiet.
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Besides producing fewer greenhouse gases, a modern turbofan is about 80% quieter than 1960 jets.
