Houston's sold-out Astroworld Festival was packed Friday night with about 50,000 people in another sign of a nation anxious to escape the pandemic gloom and let loose.
원문출처 : https://www.cnn.com/2021/11/06/us/what-is-a-crowd-surge/index.html
원문출처 : https://www.cnn.com/2021/11/06/us/what-is-a-crowd-surge/index.html