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1. The airplane's flying frame is made of aluminum alloy.
这架飞机的飞行框架是由铝合金制成的。
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2. The engineer designed the flying frame to be lightweight and durable.
工程师设计了这款飞行框架，使其既轻便又耐用。
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3. The flying frame was crucial for the aircraft's stability during takeoff.
飞行框架对于飞机起飞时的稳定性至关重要。