The Transportation Department has reported that U.S. passenger airlines carried 670.4 million passengers in 2021, an increase of 83 percent compared to 2020
The Transportation Department has reported that U.S. passenger airlines carried 670.4 million passengers in 2021, an increase of 83 percent compared to 2020
BEIJING, Feb. 17 (Xinhua) The following are the latest updates on the COVID-19 global confirmed cases in hardest-hit countries by the Center for Systems Scie