VOA慢速英语:Dubai to Put Self-Driving Police Vehicles on Streets

patrol – v. drive or walk through an area

scan – v. look around an area to find a person or thing

suspicious – adj. not trusting someone

augment – v. increase or add to

remotely – n. from a distance or another location

drone – n. kind of aircraft that does not carry a pilot or passengers

ultimately – adv. at the end of a process