In a separate but related story, airplane passengers could soon take to the air without a pilot on the plane. In the next few weeks, a group in Britain will carry out test flights of a Jetstream 31 passenger airplane. 在一件独立但相关的事件中,飞机乘客可以很快在没有飞行员的情况下飞上天空.在接下来的几个星期内,英国一个小组将进行Jetstream 31客机的飞行试验.
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