Universal mask wearing, physical distancing, Covid-19 testing and increasing fresh air into ventilation systems could allow cruising in the US to return before the end of 2020.
원문출처 : https://www.cnn.com/travel/article/clia-new-regulations-return-to-cruising-usa/index.html
원문출처 : https://www.cnn.com/travel/article/clia-new-regulations-return-to-cruising-usa/index.html