VOA慢速英语:These Paper Drones Can Make Deliveries, then Disappear

drone – n. a small flying machine flown remotely by a pilot

delivery – n. act of taking something from one place to another

tape – n. material that is sticky on one side to hold things together

battery – n. a device that chemically stores electricity

aerodynamically – adv. relating to the study of how objects move through the air

disposable – adj. intended to be used once, then thrown away

decompose – v. cause something to be slowly broken down by natural processes

vanish – v. suddenly disappear completely

self-destruct – v. destroy itself