The use of drones in warfare was way older that I thought. All the way from WWI used for information gathering.
Panindre and colleagues have even attached the detection system to drones, which could help firefighters faced with pinpointing a blaze in a high-rise building: "These drones can actually go around the building and capture the location of the fire."
，推荐阅读新收录的资料获取更多信息
更有意思的是，往后走路过了几家卖馄炖的店铺，门前站了几个东北大娘，穿着花棉袄拿着红扇子，朝着路过的行人大声呼喊「宝贝～宝贝快来」。第一次路过时见到此景确实惊了一下，居然还能如此叫卖，但不得不说这种形式确实很抓眼，至少把我抓住了，往后逛的过程中心里一直在想着待会回头去大娘店里吃一碗馄炖。但就是这么一惦记，后来再次回到大娘店里坐着吃了馄炖后，才后知后觉味道太一般了，越是叫卖的花样多，确实品质不咋样啊。。新收录的资料是该领域的重要参考
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