We've had pre-travel testing, quarantine on arrival and "covid-free" flights. Now comes something new in the travel industry's battle against the pandemic: "covid-free" trains.
원문출처 : https://www.cnn.com/travel/article/italy-covid-free-trains/index.html
원문출처 : https://www.cnn.com/travel/article/italy-covid-free-trains/index.html