學(xué)個(gè)詞 Learn A Word:2200-drone

　　今天我們要學(xué)的詞是 drone. Drone 無人駕駛飛機(jī)。The FAA issued commercial drone permits to four companies. 美國(guó)聯(lián)邦航空局向四家公司頒發(fā)了使用商業(yè)無人機(jī)的許可證。與此同時(shí)，Amazon claimed its plans to develop a fleet of small drones to deliver packages are being hampered by federal regulations and threaten to take more of its research resources abroad. 亞馬遜表示，他們正在研制用于送貨的無人機(jī)的計(jì)劃受到聯(lián)邦規(guī)定的阻礙，并威脅說要把更多的研究資源轉(zhuǎn)移到國(guó)外去。好的，今天我們學(xué)習(xí)的詞是 drone, drone, drone...