Georgia teenager Ben Tolliday explains how he built a roller coaster in his family's backyard during the pandemic in three weeks.
원문출처 : https://www.cnn.com/videos/us/2021/03/25/teen-build-backyard-roller-coaster-vpx.cnn
원문출처 : https://www.cnn.com/videos/us/2021/03/25/teen-build-backyard-roller-coaster-vpx.cnn