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饿了么获准建设第一批无人机即时配送航线 人机组合配送20分钟外卖送达
source link: http://www.pingwest.com/wire/ele-unmanned-aerial-vehicle/?amp%3Butm_medium=referral
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饿了么获准建设第一批无人机即时配送航线 人机组合配送20分钟外卖送达
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