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A a vertical takeoff aircraft is one that can rise straight from the ground.
垂直起飞飞机是一种能竖直地离地升空的飞机。
youdao
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The takeoff is in essence an action that creates vertical speed.
踏跳动作的实质是创造垂直速度的过程。
youdao
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The takeoff is in essence an action that creates vertical speed.
踏跳动作的实质是创造垂直速度的过程。
youdao