SECTION 3
　In recent years,/some farmers have been using drones for agriculture.// These drones can collect information/about the condition of farmland and products.// They also spray pesticides efficiently.// Drones are cheaper than helicopters/and are easy for farmers to operate.//
　Advanced technologies can be used/not only for agricultural problems/but also for other social challenges.// With such developments,/life will become much more sustainable.//