It's become a solemn and sacred ritual in the United States each September 11 -- pausing for part of the day to remember the victims of the 9/11 terror attacks.
원문출처 : https://www.cnn.com/travel/article/september-11-memorials-2019-trnd/index.html
원문출처 : https://www.cnn.com/travel/article/september-11-memorials-2019-trnd/index.html