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.
研究中心正试图在信鸽的帮助下改进飞行机器人。
A research center is trying to improve its flying robots with the help of homing pigeons.
研究中心正在尝试使用飞行机器人和信鸽一起投递邮件。
The research center is trying to use a flying robot, together with a homing pigeon, to deliver mails.
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