VOA慢速英语:新加坡流调人员试图找出新冠肺炎患者感染路径

track – v. to follow

interview – v. to ask someone questions about a particular subject

scramble – v. to move quickly

figure out – v. to finally understand something or someone after a lot of thought

rough – adj. general, not specific

patience – adj. the quality of being able to stay calm and not get angry

quarantine – n. a situation in which a person or people are kept away from others to prevent a disease from spreading