VOA慢速英语:韩国新测试能区分新冠肺炎和季节流感

influenza – n. a common virus that often affects people in the winter

sample – n. a small piece of something that is tested

trace- adj. following previous contacts with humans

outpace – v. to move beyond a marker

symptom – n. an indicator that one might be sick, a cough or fever

burden – n. a heavy load to carry

quarantine – v. to isolate someone who has a contagious disease