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edition.cnn.com/videos/cnn10/2020/12/11/ten-1217.cnn CNN10 - 12/17/20 - CNN Video Today's show explores the pros and cons of contact tracing, the significance of China's latest mission to the moon, and the history of Germany's autobahn. www.cnn.com 배운 단어 목록 penultimate: 끝에서 두번째의 outbreak: 발생 tie to: ~을 신뢰하다, ~에 의지하다, ~에 제휴하다 track down: ~을 찾아내다 controversial: 논란이 많은 epidemiologist: 유행병학자 footage..