VOA慢速英语:On the Ground with New York’s Contact Tracers

tracing - adj. the act of following something or some people to reach others

diagnose - v. to come to a conclusion about the cause of medical issue

appreciative - adj. showing thankfulness

pandemic - n. a contagious illness that spreads to tore countries

interview - n. to ask someone questions

technique - n. the way someone undertakes a job or activity