VOA慢速英语:学校寻求学生帮助 维持教学

stopgap -- n. someone or something that is intended to be used for a short time and then replaced by someone or something better; a temporary substitute

bunch - n. chiefly US, somewhat informal. a large amount

contact tracing - n. Tracers work with confirmed COVID-19 patients to learn whom they have been close to. The tracers then inform those people that they may have been infected. The tracers also provide advice on what actions to take.

binge – n. a short period of time when you do too much of something

expose – v. to reveal or show something that was hidden

domino effect – n. a chain reaction produced when one event sets off a chain of similar events

a couple (of) –n. two or several of something

certificate –n. a document that proves you have finished training from a school or organization

virtual –adj. existing on computers or online, not physical

staffing –n. employees