President Joe Biden is closing out his first year in office facing one of the same problems he entered the White House vowing to fix: a persistent shortage of Covid-19 testing that, if resolved, could provide a way out of the still-raging pandemic.
원문출처 : https://www.cnn.com/2021/12/28/politics/biden-covid-testing-shortage/index.html
원문출처 : https://www.cnn.com/2021/12/28/politics/biden-covid-testing-shortage/index.html