洛杉矶警察使用无人机进行勘察

drones – n. small, pilotless aircraft

allow – v. permit

particular – adj. a certain kind

approach – v. walk up to

absolutely – adj. fully, completely

intention – n. a plan to do something

capability – n. ability to do something

certain – adj. for sure

transparent – adj. easy to notice or understand

alert – v. notify people of something in an urgent manner