Lauder, who has tested out the jetpack twice, said when you're on the ground and preparing for takeoff, there's a lot of vibration and noise.
Lauder已经测试过这种飞行器两次了，认为当你在地上准备起飞时，飞行器会产生巨大的震动和声响。
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。
Sixteen hours after takeoff, the Vimy's wheels touched ground.
起飞后十六个小时，“维米号”的双轮着陆了。
Sixteen hours after takeoff, the Vimy's wheels touched ground.
起飞后十六个小时，“维米号”的双轮着陆了。
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