VOA慢速英语:科技2019：量子计算，Facebook的Libra，互联网发明者的警告

vessel – n. a small tube that carries blood through the body

cryptocurrency – n. a money that only exists electronically

digital – adj. related to computer technology, especially the internet

delivery – n. the act of taking goods to a person or place

drone – n. an unmanned aircraft guided by computers or human operators from a distance

surveillance – n. the activity of watching people carefully, often secretly, especially by an army or police force

opportunity – n. a good possibility or chance for progress

scammer – n. someone who makes money by using illegal methods or tricking people