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How do hang gliders work?

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轉寄 列印
第1級人氣樹(0)
人氣指樹
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Would you want to swoop through the air like a bird? Riding a hang glider is a fun way to fly. But a hang glider has no motor. How does the pilot take off? How does the hang glider stay in the air? Learn the answers in this book

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