Jin visited Cixi, a small city in the eastern Zhejiang province, to investigate experimental drone crop spraying techniques.

金去到了浙江省东部的小城市慈溪，调查无人机喷洒作物的实验技术。

Hitherto used mainly by the military, drones are now being considered everything from crop spraying to package delivery.

无人机到目前为止主要用在军事领域，目前被考虑用来做包括喷洒农药和送货等一切事情。

The Defence Minster Luis Carlos Villegas said the decision to suspend crop spraying because of health concerns was one of the main reasons for the surge.

国防部长路易斯·卡洛斯·比列加斯称，因健康问题而暂停的作物喷粉是面积增长的主要原因之一。

Agricultural drones, for example, offer undeniable advantages over manual crop spraying, including improved spray atomization for 30-60 times greater efficiency than manual spraying, according to China's leading drone manufacturer DJI.

例如，农业无人机在作物喷洒方面具有无可否认的优势，包括改进的喷雾雾化效果，比手动喷洒效率高出 30-60 倍，根据中国领先的无人机制造商大疆的说法。