当人们在不知道如何真正控制它的情况下发射一个像无人机一样的自我控制飞行机器时，可能会发生一些糟糕或意想不到的事情。
Something bad or unexpected can happen when people send up a self-controlled flying machine like a drone without knowing how to really control it.
“人类天使”比空气还轻，有像划艇一样的桨，飞行员可以摇动它们。
The Man Angel was lighter-than-air and had paddles like a rowboat that the aviator could pump.
第四步：像平常一样登记，并在整个飞行过程中使用你的电脑。
Step Four: Board your plane normally and use your computer for the whole flight.
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