VOA慢速英语:Ready for Takeoff: New Device Makes Personal Flying a Reality

jetpack – n. device worn on a person’s back that uses fuel or water to push them into the air

backpack – n. a bag worn on the back and used to carry things

crowdfunding – n. getting a large number of people to give small amounts of money to finance a business project or cause

sensor – n. device that detects or senses heat, light, sound, etc.

turbine – n. large machine that produces power using gas or steam

enable – v. to make able to do something

stable – adj. in a good, steady state not likely to change