A new kind of aircraft—small, cheap, pilotless—is attracting increasing attention.

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问题 A new kind of aircraft—small, cheap, pilotless—is attracting increasing attention.

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答案一种新型的飞机正引起人们越来越多的注意——这种飞机不仅体积小,价格便宜,而且还是无人驾驶的。

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